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Left 4 Dead

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The Littlest Genocide

The Littlest Genocide

Kill 5,359 Infected in the Crash Course campaign.

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How to unlock the The Littlest Genocide achievement in Left 4 Dead - Definitive Guide

On the Finale do not restart the generator and a wave of zombies keep coming.

It will probably take 1-2hours to get the 5k kills using this method less if u have played thru the campaign already as u will have some kills done.
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02 Oct 2009 20:22

23 Comments
Confirming what Dacius Decium said, i just completed both cheevos using their method.
To Clarify this allows you to go AFK.

L4D > "play Single player" > Expert > Crash Course > "2:The Truck Depot Finale" > Start Game

Grab Shotgun & med pack > 1 shot on each Survivor asap before they use a Medpack or get each other up > 1 more shot on each to permenately kill.

Grab SMG > Open Door > walk out to road > Shoot a few zombies until they run at you > run in safe room & shut door

Back up from door maybe a meter & RubberBand LeftTrigger to melee.
After a moment music will change as SpecialEffected Spawn & maybe 1 wave of hoarde.

Now the RNG bit.
@ this point sometime i had luck shooting the Smoker & Hunter, opening door to entice Boomer closer, running back in closing the door & showing my back to boomer, so hes sick on you.
Hoard will come, rubberBand & melee, hopefully boomer will position itself where sick can reach you.

What want to happen Boomer either stays right infront of door, but because his face was obscured by 1 bar of the door, he stayed there (normally runs away if look at him)
Or he gets up on box on right & sick comes through door frame or wall but hits you.

TIPs:
-Move 1 to 1.5m from the door, then setup RubberBand to melee. I found several times the Boomer or Hunter got pushed into door & able to melee me. One time came back 3hrs later to find i had 1hp!
-if do get hit, you have 4 medPacks.
- Aim at head height at window, then melees will strike everything.
-If nothing is happening before you go Afk, shoot Hunter & Smoker, Turn back on Boomer at window. If still nothing, run deeper into room & Boomer should run to door & puke on you.
-If can see Hunter at door, just shoot bottom of Door & itll die.
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By FroZeNSouL on 02 Mar 2023 23:17
worked like a charm!
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By GriZzly GRiP on 04 Oct 2009 19:49
seems simple enough, I would like to know how long it will take though :/
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By Impaled Germ on 06 Oct 2009 06:24
if i do this will it count towards the 50k kills as well
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By o Mr BuRNz x on 16 Oct 2009 12:52
yes it does count 2wards the 53k kills.
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By eG I MuRd3r uK on 17 Oct 2009 13:07
Good idea and it seems to work well although I haven't tried it yet.

Positive vote, nice guide.
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By Quarantane on 31 Oct 2009 00:58
It also helps if you turn it on expert after you've taken out both tanks and kill two of your team mates. This will net you more kills because there are less people helping you and you still have someone to knock the hunters and smokers off.
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By on 22 Nov 2009 08:58
great guide :D
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By grasn reloaded on 03 Dec 2009 21:31
awesome guide i followed it and was able to get the achievement alongside my brother in about 2-3 hrs thanks
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By ljp0390 on 27 Apr 2010 02:55
Lmao, I was going to write a guide about this, but apparently it's already been done.
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By Radient Star on 30 Sep 2010 06:28
The generator isn't there anymore. D: It's in the middle of the field area...
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By Raisukai on 18 Oct 2010 16:55
THere's also a turret in this level. That's where I got my Red Mist achievement.
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By Mtld on 17 Feb 2011 19:20
good guide,but a little time consuming...
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By Amendocrem on 12 May 2011 17:10
Doesn't seem to work anymore. The horde didn't spawn when I just waited there.
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By The Silvatung on 24 Jun 2011 14:50
Nevermind. I failed to read.
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By The Silvatung on 24 Jun 2011 15:00
Just so you guys know this method still works as of this posting. Another note that I'd like to add is that any kills accrued for the 'The Littlest Genocide' achievement will count against the 'Zombie Genocidest' achievement as well.
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By Dacius Decium on 11 Nov 2011 11:05
Doesn't work, special infected still spawn.
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By on 19 Apr 2012 01:12
Hit or miss for me on the special infected. Sometimes they spawn after the second tank is dead and sometimes they don't. I'm on my second try now for progress toward the "zombie genocidest', got 'the littlest genocide' the first time it worked in about an out starting with 1300 kills. Just don't kills your AI until after a few waves to be sure there are no special infected. Even so, leave one alive and eventually the horde will take him out.
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By DarthDawa on 23 Jul 2012 20:33
Well I am working on this currently and I killed an AI off after every wave to make sure of the special infected. Once I killed the last AI no more special infected spawned and I am sitting in the corner by the light and meleeing everything. So it really is hit or miss with the special infected.
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By KillaKevin24 on 23 Dec 2012 20:56
very good solution!!!
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By on 04 Nov 2014 10:31
Very late to the party but if you do split screen Versus and put the 2nd Controller on the infected team you no longer need to worry about special infected other than the Tank which you can kill before your 2nd controller looses control.
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By on 26 Aug 2022 19:23
It takes an hour our two (depending on how many kills you already have, so you may also want ot do this afew nights in a row. You can aslo get on the mini-gun in the back and kill a bunch that way, only problem with that is the zombies tha tcome from behind you. Oh and there is the actuall generator that you can jump all the way up to the lights and nothing gets you, except maybe smokers ;). Over all this is solution is the best way to get it, and funest thanks eG!
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By B8TINGU on 01 Nov 2009 20:10
At the beginning of the second level where you start in a safe room with your AI teammates: start the level on expert, get the shotgun and kill your teammates (if you don't kill your teammates they will kill zombies as well and take kills that you would need in order to finish this achievement sooner), get outside the safe room and kill a few zombies, return to the room and close the door.

In a little while regular and special infected will come to the door and come in wave after wave. Rubber-band your left trigger for melee, make sure that your controller is physically wire-connected to your console (so the game doesn't go idle after your controller goes idle due to inactivity), disable the vibrating function on your controller (so it doesn't rumble all over the place), get your player close enough to the door where you can hit the infected and still be out of hands reach of them. Sit back, relax, do some homework or whatever you want.

You don't have to worry about the special infected since they cannot reach you. As for the Boomer: you do want him to barf on you since this will attract even more zombies but otherwise you don't have to worry about him at all.

You want the game on expert in order to kill your teammates quickly and get even more zombies more frequently. Happy hunting...
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By Dacius Decium on 11 Nov 2011 11:04
View all 23 comments Show less comments
I managed to get this achievements same way i got the original genocidest, when in the saferoom at the start of the finale, on expert kill all bots and you can either do the next bit on easy or expert. Expert may make it quicker, not to sure. But try get the attention of a boomer by going in and out of the safe room and outside a few times, i usually got one when the first horde comes. when You have one just use an elastic band and just do the LT button, against the door with the boomer puking on you.
The boomer sometimes walks away or stands in the corner and doesnt puke on you, but keep trying to get it right and you will.

Good Luck :)
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30 Sep 2009 18:10

16 Comments
^That would not work because you can not close the door after opening it in versus, and I don't believe versus infected kills even count for the achievement
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By Jay Insomniak on 06 Aug 2013 06:17
ahh I see. Well the same solution as the larger genocide one works for this one - just run it all night. Even without opening it you'll eventually get it.
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By Shadow XBL on 06 Aug 2013 15:53
Worked for me on first try! Thanks!
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By SpookymanBR on 27 Nov 2009 20:39
Ha didnt know about this, thanks.
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By mast3r 0r0m1s on 21 Jun 2010 18:41
I was very close to this achievement. I intended to get the last 2 or 300 kills from a quick play through and some extra time on the finale/crescendo event.

When I put the disk in it needed to update. I let it, and when I checked my kills they had been reset to 0/5359.

I guess Ill be using your achievement method, much like I did for my Zombie Genocide.

Let this be a bit of a warning. If you are close to this achievement updating may reset you like it did me.
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By Sora401K on 28 Jun 2010 08:28
Worked a treat, thumb up
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By Die Super Mario on 03 Sep 2010 21:26
No idea why anyone is neg voting you. Still works. :)
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By NighthawkJoV on 14 Sep 2010 13:28
Took a little bit of set up to get the boomer to keep vomiting without me having to do anything, but once I got it just right it worked great!! Thumbs up for sure!
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By GatorFist on 14 Jan 2011 19:37
they are negative voting because elastic banding isnt actually GETTING the achievement. its just cheating
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By edacious corpse on 26 Jan 2011 12:33
Great solution! :D
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By x TheWorstGamer on 30 Jul 2011 17:42
Very nice. Had to finagle the boomer a bit more than on the No Mercy map, but once he got in the right spot my rubberband did all the work for me while I watched the Defiance episodes on Hulu.
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By Mobius Evalon on 29 Apr 2013 23:43
I wonder if you could do split screen and use a turbo controller on the second controller - be a boomer, and set the puke button to turbo to puke on the first controller in the room. The first controller, you don't have two turbos, could just rubber band the left trigger.
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By Shadow XBL on 05 Jun 2013 15:48
Any way to keep the Boomer from detonating himself. Happens every time when he charges the door.
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By GREGO McGEE on 14 Jul 2015 19:55
EmagDrolBot method worked perfectly!
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By on 08 Jan 2024 04:27
Took quite a lot of finangling the boomer. I ended up doing it on Easy. The key seemed to be to open the door and pull the boomer toward the doorframe. Close it before he enters the doorway. Now stand in the center of the door and melee to shove him away. From here on, don't move left or right at all or the boomer walks off behind the boxes on the right. Sometimes it would be a while between vomits, and sometimes the vomit missed me, but it always hit eventually.
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By EmagDrolBot on 16 Feb 2023 15:03
yeah takes a while to get it going but it works for sure, i tried with the boomer in the safe room and he played for a little bit but then started clawing at me after a while. They sure are ugly bastards.
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By eHeadaches on 13 Sep 2014 03:33
View all 16 comments Show less comments
A really easy to get this is to play a Versus game with two controllers on the Finale chapter of Crash Course. Set your main profile as the survivors and the other as the infected.

Simply make your way to the end of the level to the generator and climb up the generator pole. Infected should not be able to reach you up there. Killing all AI helps as well as you can get more kills. So start the generator, climb the pole, and fire away. It's best to use dual pistols. Do not restart the generator after it turns off and the horde will keep coming.

As you're on Versus you won't have to worry about the Special Infected as they'll be idle on the other controller. However, make sure it's always a Boomer as when it becomes the Tank, the AI will take over whatever the controller had.

I got about 300 kills in 5 minutes using this method.

A good tip is to use the other controller as a Boomer and vomit on the Survivor every now and then so even more zombies appear.
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09 Jan 2010 00:50

7 Comments
best way to do this 5 star! =D
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By v CoMpLiCaTiOnZ on 10 May 2010 01:01
they would not die on there own...
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By v CoMpLiCaTiOnZ on 14 May 2010 14:17
@v CoMpLiCaTiOnZ

Make sure you are high enough so that no infected can hit you. After a while they'll die off on their own.
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By Jedgesaurus on 14 May 2010 14:33
@merbear and z
I've added steps on how to climb the pole to the solution, hope it helps. :)
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By Jedgesaurus on 15 Jul 2010 17:10
This is the way I got my achievement. There was a video up that was not very good, but it kind of showed the action. I may make a video and give you the link so you can use it. Just don't know if I have the time to do one anytime soon. This is the best way to get this achievement, and these also go toward the 53k kill achievement as well.
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By Shemp Howard on 05 Oct 2010 16:52
@Shemp Howard
Yeah, there used to a be video on here but it went when TA went down. Couldn't find it again afterwards either. But like you said, it wasn't great. It just showed someone on top of the generator pole; not actually how to do it. So I'd be extremely grateful if you were to make a video to add to this solution. Cheers :)
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By Jedgesaurus on 05 Oct 2010 17:12
very good solution!!!
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By on 04 Nov 2014 10:32
View all 7 comments Show less comments
Similar to eG I MuRd3r uK's but this way will also get you Red Mist.

You'll need the crash course DLC for this. At the end of episode two, there is a mounted machine gun next to the get away car. Once the generator shorts out, leave it alone and hordes will come at you ever 30 seconds or so. This will get you about 25 kills at least per 30 seconds. No special infected, just regular infected. I would keep the rest of the survivors alive for the stragglers who make it up top and putting the difficulty on easy. In about an hour or so both Red mist and The Littlest Genocide will pop.
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25 Feb 2011 00:47

After reading all solutions above, i came up with my own fool-proof method. After starting the generator, and fighting off the horde. Keep your AI's alive, until you kill the tank. After the tank is dead, fight off the next horde. Once the 2nd tank comes, and you and your team kills it, kill your AI's and don't restart the generator. Instead, go onto the generator in the outside corner of the building. Crouch down, in the corner, and aim to the right. Here, you can either choose to shoot (not really suggested since you have to get ammo) or rubberband your LT, and no zombie will reach you. With this method, I got 3000 kills in roughly 15-20 minutes.
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30 Jul 2010 06:14

I did this on single player "Bus Depot Finale" on expert difficulty and just stayed in the saferoom. Remember to kill off your bots or they will steal your kills.

There is a frequent Boomer spawn so let them vomit on you when they come, Smokers are the most frequently spawned, then Boomers and then Hunters.

It is very rare that the smoker will claw the door and kill the zombies but it does occasionally happen, it's Hunters you need to watch out for. Sometimes they will just stop spawning and sometimes there are lots and they steal your kills so try and kill them as fast as possible.

Note: Try and get about 1000 kills a day.
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30 Apr 2011 07:31

Play the campaign online, offline or in Versus on the Crash Course until you kill enough Infected to unlock it.

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I got this achievement in literally 7 playthroughs of the campaign. There is another way. When the generator goes down, just don’t restart it, but wait, and the zombies will attack you in waves. There are approximately 60 zombies in each wave
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15 Jul 2012 11:35