Saints Row IV

To get a Warden to spawn, you need to get your notoriety to 6 bars. I've found the quickest way to do this in post-game is to use the Lasergun Arm on the soldiers in the army base. It's on the right of the map, between Downtown and New Colvin.

Just about every bullet that hits them and their vehicles increases your notoriety and it's possible for a Warden to spawn in under 20 seconds. The easiest way to kill it after that is to use the Rapid-Fire SMG with its Lightning Shots upgrade and the Freeze Buff skill to down the Warden in 5 seconds flat. After button mashing your way to victory, the soldiers instantly respawn around you so rinse and repeat a couple times until the achievement pops.

The Lasergun Arm is unlocked after completing Shaundi's sidequest "Payback". Having the unlimited special and SMG ammo upgrades helps too.

a good place to get fast & easy Wardens kills is on the right botton of the map the only place thats not purple its a lil square also a good place for all kill Challenges

Zoo Keeper
10G - Killed 25 Wardens. The inmates are running wild.

Wardens are the giant aliens with super powers in this game.
You'll come across these types of aliens as you progress through the main storyline.

If you don't net this achievement by the end of the game, just simply get your notoriety level to its max (kill aliens, destroy the city), and as soon as that happens a Warden will spawn. Now kill him and repeat the process until you get the achievement.

In case you still don't understand who or what a Warden is, here is a YouTube link to help you out (I take no credit for this video)

Gaining six bars of notoriety will get a warden to spawn. Using the mech makes this super easy after you complete the game, but at that point it's not difficult with just your gun and super powers.

A good method to actually kill him is to get a fully upgraded dubstep gun and the fire shooting power up. By the end of the game you'll be able to hold down the dubstep gun and shoot fire at him multiple times before running out of juice.

Alternatively you can use the heavy SMG fully upgraded. Dual wield and everything. Hit the warden with fire or ice then lay into him. This may be easier for some people because you don't have to charge the weapon up before using it.

i found shooting the bounce gun into a crowd makes the warden come out in about 90 seconds.... super quick bounce gun with the ice buff perk. took me about 20 minutes to get from 13 to 25

I grabbed this achievement this afternoon, and it seemed a fairly quick way.

First you need to have completed a few of the main missions, I had reached the point where I had rescued all the gang members, and the next available mission was to check out what was going on.

It's easily recognizable as it has red text stating you will be constantly attacked until the mission is completed.

While this mission is available you are at a constant Level 2 notoriety.

I had a rocket launcher that had the skill to have unlimited ammo (Not compulsory but it helps a lot) Now just blast everything and it takes about 2 minutes to reach level 6. My health skills were pretty high too. There is a lot of shooting so it would be good to be pretty impervious to bullets too.

- If you go a little slower then you get a lot of CIDs and Murderbots spawning. I easily reached my 60 murderbot and 100 CID kills doing this as well.

Then as the other guides say. Hit with a fireball, and shoot with duel SMGs - If you have been killing murderbots grab their dropped lasers as they can take down the Wardens in seconds.

A very easy way I found out to get wardens and kill them is to use fully upgraded Submachine guns with akimbo and the Buff power fully upgraded. What you first want to do is attract attention by killing civilians and causing mayhem. In the bottom left of the screen surrounding the mini-map is your wanted level so to say, once all six bars are filled a Warden will come and try to kill you this is where the Submachine gun and Buff come in handy. Once he is in front of you use your Buff power up and keep shooting him with your Submachine guns and you should be able to kill him in one clip hope this helped any one struggling with this.

Zoo Keeper - 10G (Original Achievement)

Difficulty: 3/10

To get this Achievement, you must kill 25 Wardens.

A Warden is a large alien that appears in certain situations and is rather annoying to fight. Such situations are Flashpoints, and maximum Notoriety while on the ground. (Once you've beaten the game or have cleared all the Flashpoints, your only choice will be to get to the maximum Notoriety to make a Warden show up.)

When a Warden arrives there will be a short cutscene showing it drop from the sky and growl before the actual fight. All other aliens will disappear as well.

Wardens have a barrier protecting them that can only be brought down if you use a super power on them first, but the barrier only stays down for a short time, so get your shots in while you can.

Once the Wardens health drops to zero, you will see a Right Trigger icon on screen prompting you to press it. This will cause a small button smashing sequence where you must press the button on screen to fill up the bar and finish the Warden off. The button on screen changes frequently however, but a yellow light under the button indicates it is changing in a few seconds. If you fail to fill the bar, you will be ejected from the Warden and will have to try again.

I found the best way is to use the Shrink Stomp Super Power to both weaken the barrier and shrink the Warden, then a simple melee attack with the Right Stick to instantly bring it to the button smashing sequence. You can also have homies fighting alongside you with super powers to make it faster if you want.

You may need to upgrade your Strength and Shrink Stomp abilities however.

Easy enough achievement, though I did something a little different than everyone else. My first bit of advice would be to finish the game first, because there are many parts where a Warden comes at you. To get a Warden to come after you, you have to have Level 6 notoriety. Having unlimited ammo is very helpful but not necessary. The part that made it the fastest was having gang backup with my gang members having superpowers, given through loyalty missions I believe. This will tremendously speed up the process, in reaching Level 6 in about 2 minutes and defeating the Warden in about 30 seconds. Again, not necessary, but VERY helpful and fast.