Batman: Arkham Origins

*WARNING* There may be some slight spoilers due to the need to give locations. I'll try to keep them to a minimum and tag anything I feel is a significant spoiler.

First of all this is important. START THESE CHALLENGES ASAP!! There are a very limited number of predator rooms in the story and none once you have finished. The challenges do apparently carry over to new game plus but will be much harder to complete. I am writing this in such a way you should be able to finish all these challenges in your first playthrough.
Secondly, one of the challenges (rank 6) can - to the best of my knowledge - only be completed in one specific location. Make sure to get it done there or you'll have rank 6 onwards to do in NG+!
Finally, one of the maps in challenge mode requires the use of the sonic batarang - unlocked by reaching rank 10 in these in game challenges. You will have to reach rank 10 in the worst nightmare track as a bare minimum if you want to complete challenge mode.

DJ Drty Chapstk has pointed out that some of the challenges will not appear until after you hit the checkpoint for clearing the room. If you clear the room and don't get the challenge, restarting will not help as the room will still be cleared when you load in. To get around this, back up your save to the cloud or a usb device before finishing the encounter and load from that.

Rank 1: Perform an inverted takedown, a vent takedown and a wall takedown.

-This one is basically given to you. When you reach the first enigma tower you will enter a room with 3 goons stood in the perfect locations for these takedowns. Get the first with an inverted (RT to hang while on a gargoyle, Y for takedown), the second guy from the grate you crawl through to reach him and the third guy by taking him down through the wall. Make sure to do a wall takedown (Y when behind the wall) EXPLOSIVE GEL DOES NOT COUNT! After these three there will be one guy left waiting for a ledge takedown. If you didn't pop the challenge restart now as it will autosave your game after killing the last guy!

Rank 2: Perform 3 silent takedowns in a single predator encounter.

Very very simple and can be done almost anywhere, I did it on the main deck of Penguin's boat. If you don't get it here you will most certainly get it in the theatre.

Rank 3: Finish a predator encounter without being seen.

I did this in the theatre inside penguins ship. If you do this right you can also earn 2 achievements here. USE ONLY SILENT TAKEDOWNS IN THIS ROOM. As you enter move to your right and takedown the guy at the top of the stairs, as soon as he's dealt with turn left and glide of the railing to land behind the second target and take him down. Next head around the corner in the direction he was going, and move across in front of the fish tank, there will be a corridor to your right, another guard will come down this corridor, get behind him and take him down. After this move in the direction he came from and get behind the ladder. You will see two enemies guarding a hostage. Wait for the one on the left to move before sneaking around and taking down the guy who stayed, then follow the one that moved behind the fish tank and finish him. To complete the room grapple back to where you started and head down the stairs to reach the last guy.

Rank 4: Use a sonic batarang to lure an enemy into a takedown.

Some people have reported needing to do this up to three times to unlock the challenge, but I got it on my first try.
After you exit penguins boat you will be near the steel mill. There are several guards nearby and it counts as a predator encounter. Simply lure the guards with the sonic batarang (down on the d pad twice to equip) and then take them down. I would recommend luring them towards unique takedowns eg grates or under an invert takedown location, as I had issues with the challenge not registering after a lure then silent takedown.

Rank 5: Complete a predator room without using detective vision.

I did this on the roof of the GCPD building (you have to go here for a main story mission anyway). Grapple to the roof and then takedown the sniper, then drop onto the helipad and take out the guard patrolling there. One guard will walk down next to the helipad, so drop down and take him out too. There will be two guards left patrolling and two by the door. Watch the patterns of the guys patrolling and take them out however you please before grappling to the roof above the two remaining guards. Although they seem very close together you can in fact silently take down both if you start with the guy on the left (left side as you're looking at the door) as the AI in this game have literally no peripheral vision...at least not on normal difficulty anyway.
Really you can take out these guards in any way you please, just DON'T USE DETECTIVE VISION.

Rank 6: Perform 4 exotic takedowns in one encounter; vent takedown, hanging ledge takedown, corner takedown and explosive gel takedown.

Okay this is the one that is a real pain in the ass. As far as I know this can only be done inside the gotham merchant bank. I would recommend doing it the first time you go there as the second time is way more difficult.
The corner takedown: needs no explanation although I would do this first as you are likely to get spotted trying once the guards are on alert.
Hanging ledge takedown: this is more difficult than it seems. Not just any ledge will work. On the lower half of the bank are 4 metal grates, stand on top of one then use the sonic batarang to lure a guard underneath, then take him down when prompted. These are to my knowledge the only ledges you can use this takedown on and the reason this challenge blows donkey d**k if you aren't prepared for it.
Explosive gel: This must be on a solid wall not the glass. There are two walls at the far side, only use one of them because the takedown will not count if the guard isn't fully KO'ed.
Vent takedown: to clarify, these are the vents in the walls NOT the grates on the floor. Use detective mode to find one and then lure and takedown.
PuckJunkie has pointed out that if you remove the vent covers you can no longer do a vent takedown. Vents in this area can be accessed through the floor grate at the back of the room.

If you are past this encounter, DJ Drty Chapstk has pointed out another location it can be done before entering NG+ however this is VERY late in the game. Please check the comments for his solution.

Rank 7: Complete a predator encounter without using takedowns.

I'm not entirely sure what counts against you for this, so just to be sure I ONLY used cape stun beatdowns. (B,x,x,x,x,x,x,x...)
I did this challenge in the sionis steel mill in the room where
Simply grapple up to a gargoyle to spot isolated guards, and then drop and stun them with your cape before beating them down. This is not difficult but does take patience to wait for guards to become isolated.

Rank 8: Complete a predator encounter without using detective vision and without being seen.

*NOTE* DO NOT USE SMOKE GRENADES OR FIRE EXTINGUISHERS. Stepping into smoke will automatically activate detective vision and negate this challenge.

I did this in the main story mission in the lobby of the hotel. There will be three guards on the upper walkway and 5 on the ground floor.
As soon as you enter the room grapple up to the gargoyle on your left, then drop behind the guard patrolling there and take him down, then move into the direction he came from and take down the guy stood on the walkway and the next one (be quick as he will head down the stairs. If you miss the opportunity to get him he will spot the first guard you took down on his next pass making the room more difficult).
Once all three up top are done with (you may get an autosave here) take notes of the guys walking below. The guard holding the jammer will make his way to the far right of the room and walk behind a wall, this is the best time to take him down. After this the guy on the far left of the room will walk into an alcove next to the stairs and stare at the wall for a while, this is your best opportunity to take him. Now there is only one guard patrolling, study his pattern and take him when it's safe to do so.
This just leaves the two guys stood by the security room. It has been suggested to lure one of them away with the sonic batarang, but I had no issue gliding behind them and silently taking them both down.

Rank 9: Perform 4 loud takedowns in one encounter; grate takedown, inverted takedown, knock out smash takedown (X while performing a silent takedown) and ledge takedown.
Rank 10: Complete a predator encounter with at least a high threat level without being seen.

I have grouped these challenges as I did them in the same room. The pool area of the hotel.
I can't really give step by step instructions for this room as loud takedowns will cause guards to panic and move around randomly. I will however give a few warnings; firstly the ledge takedown must be the one where batman grabs them with the batclaw to pull them over, not the variety performed on someone stood right next to the ledge.

(To clear this up a bit, this is still the press Y ledge takedown, but should be performed when the enemy is too far from the ledge to simply grab. I did NOT mean manually use the batclaw to pull them over. Sorry for any confusion!)

Secondly get the inverted takedown done early, after you take out a few of the guards proximity mines will be armed on the gargoyles and this takedown becomes impossible. Make sure to use detective vision and BE PATIENT. If you do get seen restart from checpoint and try again. Remember to get those loud takedowns done early!

Rank 11: Take out an enemy with the sonic shock batarang.

I went back to the entrance of the steel mill to do this. Simply lure an enemy towards your batarang and then use its shock capability to KO him. Very easy in comparison to the last few!

According to SooFany this can be done on any enemy and doesn't need to be in a predator zone!

Rank 12: Complete a predator encounter with a high threat level or above, performing at least 5 different takedowns.

There are 6 enemies in this room. I used:
Floor grate takedown
Inverted takedown
Takedown through wall
Corner takedown
Vent takedown
Silent takedown
to get rid of all six, but feel free to play how you want just as long as you get 5 DIFFERENT takedowns.

*NOTE* While I did get my challenge here, I noticed the stats said it was a medium difficulty room, so this may have been a glitch. If this doesn't work for you bear with me, I'm looking for more rooms!

Rank 13: Eliminate 3 enemies in the duration of one smoke pellet.

This is - I think - impossible before you finish which gives you increased smoke duration. After you have this go back to the steel mill and perform a loud takedown on the sniper, and if needed throw a sonic batarang there too. Once thee guards have gathered drop a smoke pellet and use knock out smash on all of them. Very easy!

Rank 14: Eliminate 3 enemies using a propane tank

I did this in the The propane tank is on the middle level, throw a sonic batarang next to it and do a loud takedown on whoever comes to investigate. Everyone will hear this and gather around. Now here comes the hard part.
1 - wait for three enemies to gather, then pull out the remote claw.
2 - as soon as there are 3 enemies quickly lock on to one (rb) and fire at another, this will knock them both down
3 - Very quickly fire another shot at a third guard and the propane tank.

This challenge is an absolute pain in the d**k and took me at least 10 tries. Just keep restarting and you'll get it eventually.
Note- you may want to take down the guy with the jammer first. He spawns on the opposite side that you enter the room from.

Rank 15: Pull 2 enemies over different railings at the same time.

VERY easy compared to rank 14. In the next predator room there will be two guys in front of you as you enter. Turn to your left and climb the railing, throw a sonic batarang next to the gap in the railings and quickly jump off the side. Now grapple back to where both guys were originally stood and wait for one to be lured by the batatrang. Once he climbs up, string the two guys together with the remote claw. Simple! Sometimes they may bounce off the railing and not fall. Restart and try again, it's a very short section.

Feel free to comment or message me if you see anything wrong with the solution, need more clarification or have more help to provide! Thanks!

Following this guide all challenges can be completed in NG. The same strategies apply in NG+ and IATN mode, with some alterations to compensate for armoured enemies etc. If you are in IATN mode you can kill yourself at any time, restarting the story but keeping your challenge progress. This guide was meant to help people achieve this within a playthrough, and I feel that adding everything else would clutter it too much. If you are on IATN mode or have totally finished the game but still need this; there are some EXCELLENT tips in the comments. Good luck everyone!

Full video guide to all 15 ranks, to supplement all the other great guides in here.

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For those having trouble with rank 14 (Eliminate 3 enemies using a propane tank) here is the easiest solution!

I did this on I Am The Night mode, but it will work just as well on New Game + if that's where you're at. It works with all enemy types, armoured or not.

First take out a single enemy near a propane tank, to get the attention of other enemies. When three of them appear, use your Remote Claw to pull two of the enemies together and knock them to the ground. While they're on the ground, quickly pull the remaining enemy towards the propane tank, and boom. Rank 14.

You have to make sure you use RB to lock onto the first enemy, and then RT to hit the second enemy otherwise you may end up auto-targeting the propane tank first by mistake.

Very quick and easy! I did it in the GCPD, video below:

I got 14 and 15 fairly easily all in the same room. I did it in New Game+ It's in the hotel, the first predator room you encounter [right before you get the shock gloves] when you enter grapple to the second gargoyle on the left side of the room towards the back. There will be two guys standing next to a propane tank. Wait and a third guy will come down the steps in front of them. Use your remote claw to pull two guys together and get them on the ground. Then pull the propane tank at the third guy. It should knock all 3 of them out. That gets 14. Then I swung back to the first gargoyle (the first one your left when you entered the room) and waited for two guys to climb to the second level and used the claw to pull them together over two separate balconies. And you have 15 and a nice achievement. If you're patient two guys will be walking in front of two different balconies at some point during the rest of your time in the room so you shouldn't have much difficulty doing it.

You all will be happy to know that I have found a loophole in the "no takedown" challenge! For all of us tying to finish this challenge up in NG+ this is EXTREMELY helpful. You dont have to mash the enemy's face in. You just have to use a combination of the batclaws and remote claws to pull enemies off edges and string them up and the game will not count it as a takedown, making those armored enemies look like sissys...
Have Fun

For rank 14. An easy way! In NG+ history when you enter in Sionis Factory after bank encounter with the joker. There are some guys talking about the new boss. Take care that they don’t see you.

Use the remote claw to hit the two ones on the both sides of the guy with a shield, then, when the others see you, use the remote claw against the guy that runs downstairs and the propane tank when he’s near the other two knocked guys.

Finish the battle and ... Voila! Hope it helps.

A few tips for anyone struggling with some of the more frustrating ranks.

Rank 7: The Coventry Fire case has you finding the killer on the back deck of The Final Offer in a combat encounter. The main deck of the boat is a Predator zone, but at this time, there's no Predator encounter. Since you're in the zone, however, just beat everyone up, and it will pop. You probably should avoid the ground takedown (RT+Y) just to be safe.

Rank 14 and 15: I actually got both of these in the same encounter, and felt the most like Batman of any point in the game. In NG+, in the Drug Lab, grapple up to the second gargoyle on the right. Throw a sonic batarang across the room into the corner of the room where Black Mask is, just past the vent opening in the wall. A goon will come to investigate, and when he does, detonate the sonic batarang to take him down.

Three guys should come to investigate. It took me a few tries, because the first guy to see him just turned around and went back up the stairs. If three guys come, you should be fine. Remote batclaw two of them together, then shoot again at the third, and it should auto-target the nearby gas canister, taking all three down and popping Rank 14.

Immediately tag one of the snipers with the Remote Batclaw (RB), then the other, and they'll get yanked over their railings for Rank 15 and the achievement.

Take out the last two goons with Gargoyle Remote Batclaw takedowns, and the encounter's over, along with Worst Nightmare.

As I mentioned, I had to restart it a couple times, but when I finally got it, I'd cleared the room in 20 seconds without moving from the first gargoyle I jumped to. I wish that had been one of the challenges. I'm going to try to provide video when I go through on IATN mode.

Oblivious to this achievement as I was, I didn't actually start going out of my way to complete the challenges until I had already started my New Game + run through. Just wanted to write a quick solution for Rank 14 (Eliminating 3 enemies with a Propane tank).

Rank 14:
By the time I had reached this rank in my NG+ run through, I had already defeated Firefly on the bridge. Upon reaching Blackgate Prison, I realised that during the first fight outside (10 or so enemies), there's actually a Propane tank just sitting there. All you need to do is just use the Remote Batclaw to bring the Propane tank towards the group of enemies. It might take a couple of tries, but it definitely works, and I'm fairly sure this is the latest point in the game that you can get this. I think you have to finish the fight before the challenge will pop, but if you're worried about finishing the fight and not unlocking it, just make sure that you've actually KO'd three enemies at the same time with the Propane tank (i.e. bats floating around them when they fall, they look... unconscious..)

Just also quickly wanted to note that a large majority of the challenges are only unlockable through STORYLINE PREDATOR ENCOUNTERS. I spent ages on the GCPD rooftop post-game trying to unlock a few of them, but to no avail. I finished all of these challenges in one NG+ run through, so don't worry if you've finished the main story and haven't popped this achievement.

Happy hunting

As someone who got to IATN with like 90% done only to have my save corrupted twice and just completed the first New Game (not plus) and managed to finish Worst Nightmare I'll add this...

I would probably watch some of the videos to make sure you know what to do (not necessarily where to do) some of the harder ones like knock three out with a propane tank. From there, I would back up your game say every hour or two to a usb.

Now every time you have a new challenge in worst nightmare, see if it's something you can do in the free roam, ie, not the room challenges. Like others have said, double back to Penguin's ship The Final Offer and also the other place... Is the the Industrial District or something? Anyhoo, you can complete a lot of stuff there, and also on side quests like Deadshot and Black Mask.

If you go into an encounter and you don't hit whatever challenge (for me the sonic batarang lure takedown was a bit tempermental) just hit pause button and go to restart. Biggest advice, NEVER waste a predator encounter. GL!

For those who are struggling with Rank 6:

- Vent elimination
- Side wall elimination
- Over the ledge elimination
- Gel explosive elimination.

I found this video over here and I want to share it with you. It seems the Over the ledge elimination is unique (probably) on the Bank the first time you meet the Joker and probably there is no other place to do it althought I prefer to not confirm this. Here's the video, credits to him.

In my opinion Rank 14 is the toughest, and there aren't really any fleshed out guides on TA for doing it during your first playthrough.

I found this video (I didn't make it) and used its strategy:

The player in the video moves very fast and is playing the Windows version, so it's a little hard to follow. I'll explain step by step what happens.

1. This is in the first predator room inside the Gotham Pioneers Bridge when it's being attacked by Firefly.
2. After entering the room you'll have to wait for Batman to say something before you regain control. Once you do, move quickly; there are three guards on the upper level having a conversation, and you need to get everything in place before their conversation is over.
3. Glide to the box structure on the left side of the room, drop down behind the guard patrolling around it, and take him out silently.
4. There's a fragile wall right where you took out that first guard, and behind it is a guard with a radar jammer. Walk around and take him out silently, making sure he's facing away before you enter the corridor he's in.
5. Immediately turn around (so the fragile wall is on your right) and creep out, turning left slightly so you can see floor grates and a guard walking away. Throw your Sonic Batarang on the floor roughly next to the left corner of the grates.
6. Turn right and crouch behind the panel so you can see the guard approaching as he seeks out your Sonic Batarang. Just as he reaches the edge of the grate, hit him with the Glue Grenade.
7. If you're done everything right, the guard will scream, interrupting the conversation of the three guards above. They'll all jump down to the trapped guard together. Some people in the YouTube comments say this will only work if one of them lands on him, but I was able to do it fine without that happening.
8. Once all four guards are there, hit them with the Triple Batarang, knocking at least two down.
9. Pull out your Remote Claw, point it at the canister, and, importantly, use RT rather than RB so the game automatically picks a target for you. If you knocked down all four guards, you'll have to wait until one of them gets up, so hope that a) they don't all get up at once and b) the rest of the guards don't arrive before they get up.
10. If everything went right, the canister will get pulled into one of the guards, knocking him out, and knocking out at least two guards on the ground and completing Rank 14.
11. Be careful as you finish up the room! You don't want to die and lose your progress.

Good luck! It took a lot of trial and error for me to get this one. It really hinges on putting the Sonic Batarang in the right place and waiting for the guard to be in the right position before you Glue Grenade him. Watch the video carefully and replicate the strategy as precisely as you can.