The Orange Box

You have to be quick and get to the Striders when they first appear. From xbox360achievements.org:

"Strider 1: From Cranes, slow walking.
Strider 2: From Sawmill, fast walking and will destroy the Sawmill if you
aren't quick.
Strider 3: From Water Tower, slow walking.
Strider 4: Cranes, slow walking.
Strider 5: Sawmill, slow walking.
Strider 6: Water Tower, Slow walking.
Strider 7: Cranes, fast walking, heads to building to south of Cranes.
Strider 8: Water Tower, fast walking, heads to the building to south of the
Water Tower.
Short Break, stock up on supplies.
Strider 9: Cranes, slow walking.
Strider 10: Sawmill, slow walking.
Strider 11: Water Tower, slow walking.
Strider 12: Sawmill, slow walking.
Strider 13: Cranes, slow walking."

The following playlist was helpful for me to get this achievements:

I just got the achievement and wanted to add some additional notes. This was a lot easier than I thought it was going to be.

I used a combination ClubStew’s references and what MxOxRxRxIxS said about the “don’t look, won’t destroy” glitch. I tried the “walk backwards” technique but gave up when I realized I didn't need it :)

Where does this happen?

This is the last part of Chapter 6 “Our Mutual Fiend”.

Play through the chapter until you’re sent outside to help defend the silo from Striders. Just before you get into the car, look to your left at the map. You have to look around the guard standing in front of it. Notice that the map shows 2 large buildings about half-way down, a Saw Mill near top-center and 2 small buildings at the bottom.


What buildings am I trying to save?

The 3 buildings that need to be saved are the 2 large buildings (one on the West side, South of the Cranes, one on the East side, South of the Water Tower) and the Saw Mill (top center). You do not need to save the 2 small buildings South by the Silo because they are not attacked.

How many Striders am I fighting?

There are 3 fast and 10 slow Striders plus 1 to 3 Hunters with each Strider.
Strider #1-slow from the Cranes
Strider #2-FAST from Saw Mill (from the East side of the Saw Mill)
Strider #3-slow from Water Tower
Strider #4-slow from the Cranes
Strider #5-slow from the Saw Mill
Strider #6-slow from the Water Tower
Strider #7-FAST from the Cranes and heads to the building South of the Cranes
Strider #8-FAST from the Water Tower and heads to the building South of the Water Tower
Strider #9-slow from the Cranes
Strider #10-slow from the Saw Mill
Strider #11-slow from the Water Tower
Strider #12-slow from the Saw Mill
Strider #13-slow from the Cranes

Which Striders destroy the buildings?

Only the FAST Striders (#2, #7 and #8) will attack and destroy a building and each only attacks one specific building. The SLOW moving Striders will just work their way South to the silo and will not attack the buildings, so you have more time to deal with them.

Does the “don’t look, won’t destroy” glitch really work?

The “don’t look, won’t destroy” rule absolutely works! It’s ok to look at the 3 buildings UNTIL their respective fast Strider comes out. After that, any peek at the building will cause the Strider to open fire when it gets there. Until you look at the building, the Strider just walks up to it and waits.

What other basics should I remember?

- Use the Magnusson Devices (MD) on the Striders
- Use Rockets on the Hunters.

- Reload the car with a fresh Magnusson Device when ever possible.
- Always clear out the Hunters before you move on. They destroy the Magnusson Devices while you’re trying to stick the Striders.
- I used the Invincibility and Reload cheats with the Rocket Launcher.
Invincibility = LB D-up RB D-up LB LB D-up RB RB D-up
Ammo Reload = Y B A X RB Y X A B RB
- Keep an eye on your Rocket Launcher ammo. If you switch weapons with zero rockets, you can't switch back to the Rocket Launcher and reload. If that happens, just restore the last save.

Should I make changes to my controller settings?

YES! You must at least clear the Gravity Gun quick-select (RB) because the Ammo Reload code uses RB. Also, remember to stand still while entering the codes. (thanks Epsilon Theta).

I left the LT, RT and X buttons unchanged and I changed the Sprint command to RS. All the others controls I just cleared (including the Gravity Gun shortcut button). That means that the RB, LB, A, B and Y buttons did nothing when I entered the reload code.

How often should I save?

When you get somewhere SAVE. Just before you attack a Strider SAVE. After you kill a Strider SAVE. After you clean-up the Hunters SAVE. If you screw-up and empty the Rocket Launcher and then switch weapons (DOH) you just have to reload the most recent save.

So, How did you do it?

OK. Back to the game and the map.
- Before you drive the car outside of the Silo SAVE - Note the date & time of this save. Never overwrite this one in case you need to restart the whole thing. You don't want to replay the whole chapter just to get back to this point!!! All future SAVEs in my description are implied so I’m not going to call them out. Don’t forget!
- The video by mactiddy (below) is very helpful to take out the first 2 Striders, but the video stops after #4-slow.
- Drive to the Saw Mill and take out #1-slow and #2-FAST just like the video does.
- REMEMBER to refill the Car’s MD before you drive to the next Strider…
- Drive East then South to chase down #3-slow south of the Water Tower.
- Drive North then West past the Saw Mill towards #4-slow at the Cranes.
- Drive East back to the Saw Mill and take out #5-slow.

Here is where I deviated from the other solutions

- By now you should have had warnings about #6-slow and #7-FAST.
- IGNORE the warning about #7-FAST coming in from the cranes. Let him just go to the building and wait. He won’t destroy the building unless you’ve peeked at it since he started walking.
- From the Saw Mill drive East then South and chase down #6-slow from the Water Tower.
- Now we’ll go back and get #7-FAST who has been patiently waiting to die at his building South of the Cranes. While driving there, you need to avoid looking at the building. So… from the Water Tower building drive North-East towards the Water Tower, then West past the Saw Mill, to the Cranes then South-West. Drive through the trees and stick to the rocks on the left. Park behind the large boulders before you get to the Crane building. You’ve already been saving often (right?) and this is another good spot to save. You can peek around the rocks and see the Strider just sitting there.

Can I peek at the building?

- IMPORTANT Don’t look at the building unless you want to see what happens. In that case, look at the building and note how quickly the Strider destroys it. Then just reload the last save point when you're ready.
- Use the Rocket Launcher to draw out and kill all the Hunters hanging around. Shoot them while looking away from the building. When done, grab the Magnusson Device from the car, peek around the rock just enough to see the Strider, then aim, shoot and kill. You gotta be fast because he’s going to shoot the building soon after you stick him with the MD.

Only one Fast Strider left!

- Don’t bother reloading the car with another Magnusson Device from the building you just saved. Just get in the car and drive FAST South then East to the building South of the Water Tower. You’re going there to kill the #8-FAST Strider. Cut through the trees to save time. Park in front of the Water Tower building. Run inside and get a Magnusson Device and then walk North/East towards the Water Tower. Strider #8-FAST will come from the tower and get to you before his Hunters. Proceed to kill him and then clean up the Hunters.

WOW It Worked !!!

- EXCELLENT, the last 5 Striders are easy to kill because they are all slow.
- Drive over to the Cranes (after refilling Magnusson Device on the car) kill the Hunters with rockets, then MD Strider #9-slow.
- Back to the Saw Mill for #10-slow
- Over to the Water Tower for #11-slow
- Saw Mill for #12-slow
- Chase down #13-slow who by now is probably half way to the silo.

DONE

And congratulations !!!

A simpler solution than this exists. If you listen to the developer commentary, they explain how they want the player to experience all of the cool stuff in the game, and therefore no buildings blow up unless the player can witness the destruction. Basically, save frequently, and use angles of sight to your advantage.

Taking everyone else's solutions into account, I think I have a fairly simple method to get this achievement. Refer to these codes in the solution.

Turn on invincibility: Left Bumper, Up, Right Bumper, Up, Left Bumper, Left Bumper, Up, Right Bumper, Right Bumper, Up.

Full ammo: Y, B, A, X, Right Bumper, Y, X, A, B, Right Bumper.

At the start of the offensive, enter the invincibility cheat. Then pause, go to controls then keep going down to gravity gun and press (X) to clear the gravity gun shortcut button. Now, you can kill all the striders with rockets and use the ammo code to refill the rocket count. You will need to have the rocket selected to refill its ammo, hence why we are re-signing RB because it switches to the gravity gun otherwise. Do not switch away from the rockets at any time.

So, pay close attention to the top solution, the fast moving striders are the ones to really watch out for, you have to be fast when taking them down, very fast. So take out the first one on cranes, getting to know how to use the code often, it takes 4-5 rockets for a strider to go down. So use the code fast whenever you are out of rockets. Don't switch weapons while the rocket count is empty otherwise you can't refill the ammo because it has to be selected

When the second one appears at the sawmill, race over and take it out fast, might be better to use the bomb for this one only because you don't have time to fire all the rockets at it. Don't worry about taking out the hunters, they can't take down buildings and they can't kill you.

After that, keep going from place to place, using rockets to fell the striders and refilling ammo whenever you are out. Use the top solution for a guide about whether they are fast walking and where they are coming from. Prioritise the fast moving ones first and save frequently. There are only three fast moving ones, the other two are next to each other so you have to be quick when entering the code and firing the rockets. After that, its easy, you won't struggle with the slow moving one's.

Good Luck guys!

Use the previously posted guide/video as a reference but what made it much easier was saving between every Strider. That way if I screwed up (and it happened alot), I could just re-start from where I was, not from the beginning.

Here's what I did. I entered invincibility
(LB up RB up LB LB up RB RB up) first.
Memorized the ammo cheat.
(Y B A X RB Y X A B RB)
Like ConsPyre said, if you don't see the building, it wont get destroyed. I would drive to the first few as they show up and destroy them with either the rocket launcher or the sticky bomb. When the fast one that comes from the cranes comes, I avoid going that direction. I head back to the base, put a bomb on my car, then reverse towards that strider. You can stop far enough away to see the building without him destroying it. Take out the hunters from a distance with the rocket launcher. Remember to only shoot 2 rockets, and then enter the cheat. After the hunters are dead, grab the sticky bomb and walk in reverse towards the Strider. I just stick to the right side of the road. You'll find yourself under him eventually. SAVE! Now once you look up at him, he'll prepare to fire. You gotta stick him, and shoot him before he does. That works for any Striders that stay at a building.
My main strategy is to just sit at the main base and wait. The striders should eventually come that way. When the alarm goes off, blast them with the rockets. When I did this, all but 2 came to the main base. Those were the ones I did the thing where you walk under them backwards.
Save often.

I wanted to make my own solution for the simple reason that all of the other solutions on here only have part 1 of the video guides and the other parts are no longer linked/available.
So if you want to watch a complete video guide check out my video I have included uploaded by 'BadgeHuntersAnon'.


I simply followed the video saving multiple times after each Strider. It is from the PC version but it makes no difference.

One point of note however, I must of been falling behind the video because the Strider that is heading toward the base at 8.00-8.10 I bypassed and went straight for the Strider 8.25-8.32 instead as every time I did it the way in the video the 8.25 Strider would destroy the building as soon as I got there. Then after that one I went back to the 8.00 Strider. Don't worry to much about any Hunters you leave behind if you kill the Strider without killing them as at this point you get a 1 minute break before the final waves happen.

All in all it took me about 2 hours of watching-playing-saving-reloading etc.

Also one more tip, put subtitles on so that you know when they might have destroyed a building as they will say things like 'a Strider is coming at what 'used' to be the saw mill' meaning they blew it up and you didn't notice. so if they don't say 'used to be' when they announce the attacks you know you are good.

I didn't bother with the ammo cheat as using logs was quicker in my opinion when killing Hunters.

I did however use the invincibility cheat which for those of you who don't know is pause the game and press:
LB, UP, RB, UP, LB, LB, UP, RB, RB, UP

This was my last achievement to get for 100% Orange Box so its fitting in a way that I made this guide to honor that achievement. 100% is very do-able, the hardest by far was the Gold medals on Portal, but cheats can be used for that also that help but its still very hard. Just stick with it and 100% can be yours too.

I hope this guide is of some help for you all.