The Passing

4.0666,84712,512 (19%)3-4 h
The Passing

MUTANT OVERLORD achievement in Left 4 Dead 2


Play 6 Mutations.

3 guidesOnline Game Mode - These achievements require a connection to live services, such as Xbox Live, for playing an online game mode, for sharing content, accessing leaderboards, or validating data with a server.Single Player - These achievements can be obtained by a single player.Cooperative - These achievements can be obtained by two or more players in a cooperative game mode who have met the achievement requirements.Versus - These achievements can be obtained by two or more players in a face off gamemode who have met the achievement requirements.

How to unlock the MUTANT OVERLORD achievement

  • Kyuubi AlphaKyuubi Alpha945,365
    04 Aug 2012 04 Aug 2012 04 Aug 2012
    77 0 8
    with the new update 4th august 2012 at the main menu screen go to the mutation button press Y to cycle through the mutations play one of each of the originals ( just load up the map and quit out)
    The fastest way i found was to set it up as a local server (mine could not conect to the dedicated) load and quit out here is a list of the ones i used to get the achievment

    follow the liter
    gib fest,
    bleed out,
    flu season
    last man on earth!
    also these should count
    lone gunman
    deaths door

    Update from Grizzly Bear
    I played Headshot, Four Swordsmen, Chainsaw Massacre, and Iron Man. So all mutations listed on the main menu should count.

    Guide not helping? View 2 more guides for this achievement.

    Showing most recent comments. View all comments.
    Cornerscout@Blind I think it's safe to say that loading up 6 matches and quitting out of them shouldn't take you 6 weeks, yeah. laugh
    Posted by Cornerscout on 27 Jan 13 at 08:35
    Diesel Foleyworked like a charm...20mins
    Posted by Diesel Foley on 19 Jul 14 at 05:21
    eHeadachesguide is fantastic, but equally brilliant is Reevys comment on what to do should your counter stick, mine got stuck at 5 and on just a realism verses game loading the achievement unlocked. double thumbs up guys
    Posted by eHeadaches on 30 Aug 14 at 03:09
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  • JayourJayour879,218
    23 Sep 2011 15 Dec 2011 15 Dec 2011
    26 3 7
    For this achievement you need to play 6 mutations, the mutations can be found in the Left 4 Dead 2 menu under their own category. Mutations are currently being updated and changed once every 2 weeks and so at this rate it will take a minimum of 6 weeks for you to unlock the achievement.

    However that being said there's a couple of major issues for players working toward this achievement. The first of which is that Valve introduced what are known as Community Mutations do not count toward your mutations count and so in short, if a Community Mutation is put up while you working on your achievement, it won't increase your count and you'll have to wait for the next mutation and hope that it's an "official" mutation. The second piece of bad news is that duplicate mutations do not count twice, for example if you play "The Four Swordsmen (Of The Apocalypse)" and later down the line play it again, it won't count. So in short each mutation can only increase your total count one time.

    This former problem has been verified by Valve in the L4D blog. (Thanks

    After our recent poll about community Mutations we received many emails pointing out that you cannot earn Mutant Overlord playing custom mutations. Don’t stop with the Mutation ideas, we will come back to community Mutations. We are just taking a little break for now.
    The latter problem is also highlighted in the same blog.

    The Passing introduces a series of weekly game mode events dubbed "Mutations." These are week-long runs of new gameplay modes that range from "Realism Versus" to "Chainsaw Massacre". Each week one new Mutation is featured and the previous Mutation retired. All you have to do is play 6 DIFFERENT Mutations, not 6 straight, from the cycle from 6 different weeks.
    For those interested the blog can be found here.

    Now, as stated earlier the game updates the mutation once every 2 weeks. Every Friday the in-game blog will notify you of the mutation change (approximately 15:00 Eastern/Noon Pacific).

    There have been reports of people getting stuck at 5/6. It appears the issue is that Realism Versus only counts as .5 (0.5/6). To solve this simply join a game of Realism Versus again and play for a while. During the game the achievement should unlock. This "fix" comes from Ben Legend

    To receive credit for playing a mutation you only need to enter the challenge/game. This has been confirmed by multiple people and is useful if you don't have a lot of time in a given week to play.

    A list of mutations can be found here. This is the most complete list available.
    Showing most recent comments. View all comments.
    xBrushedRedxI figure yall better hurry up and get this while yall can. I'm sure here soon they're gonna stop changing them or just stop it all together. I mean, mutations have been out for a little over 2 years now.
    Posted by xBrushedRedx on 19 Jun 12 at 17:39
    Wanderer128There is about to be new DLC for this game, and with it, all the mutations will be available to be played at any point in time. Whether this will make the achievement easier, or if it will disable this achievement is a decent question, but I just wanted to inform the OP of this since he/she will likely be changing this solution when the new DLC comes out.
    Posted by Wanderer128 on 01 Jul 12 at 02:40
    Bjarke Briejust want to add that if you have trouble with this one, and you've ALREADY played realism vs numerous times and waited for ages and it still doesn't unlock, try playing the other vs mutation. The achievement unlocked for me right away when I started a game using the "regular" versus mutation
    Posted by Bjarke Brie on 17 Jan 14 at 20:39
  • narvdudenarvdude353,632
    13 Nov 2010 14 Nov 2010
    25 6 33
    Join a mutation every friday afternoon, as its a new mutation per week - you dont need to play, just join.
    If you're stuck at 5/6 (like I was for 2 weeks!!), join a mutation game then play versus for few minutes. This SHOULD unlock the last one for you!
    Showing most recent comments. View all comments.
    NitrousSpeedI hope they continute mutations cause i need 5 more
    Posted by NitrousSpeed on 22 Jun 12 at 19:36
    HIGHHANDS@wizm31337: by the time there was one mutation at are late dude...
    @NitrousSpeed: today a new dlc come out inklusive all mutations so anybody is fine...
    Posted by HIGHHANDS on 24 Jul 12 at 08:01
    NitrousSpeed@HIGHHANDS: I know Cold Stream allows us to play every mutation but its not out yet so i still can't get my last avhievement for playing 6 mutations. I wish value would hurry up and release it. They have kept us waiting long enough
    Posted by NitrousSpeed on 31 Jul 12 at 16:26
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