1. Left 4 Dead 2 Achievements
  2. SEPTIC TANK achievement
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SEPTIC TANK achievement in Left 4 Dead 2

SEPTIC TANK

Use a bile bomb on a Tank.

SEPTIC TANK0
4 guidesOnline/Offline - These achievements can be obtained in either an online or offline game mode.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.
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How to unlock the SEPTIC TANK achievement

  • SpeedyBlueDudeSpeedyBlueDude
    27 Dec 2009 28 Dec 2009
    32 0 3
    Actions
    A very easy way to get this is to go into a survival match online where A tank comes out almost every 2 minutes. When the match starts and you have time to get weapons and equipment before you start the game grab a bile bomb (almost all levels have one at the starting point). From there just survive, wait 1:30-2:00 minutes for a tank to show up, let it go for a teammate (so it's distracted) then READY AIM FIRE the Bile Bomb at the tank. Achievement unlocked

    Guide not helping? View 3 more guides for this achievement.

    Showing all 3 comments. Leave a comment.
    no0bSterDid it this way by accident. There is normally more then one tank (after about 30secs of the first one spawning) on survival vs aswell so this makes the achievement much easier.
    Posted by no0bSter on 28 Aug 11 at 18:55
    AradorThat was really easy, cheers for that
    Posted by Arador on 27 Aug 18 at 04:35
    GooierChip79591well you could wait until it's been 40 seconds for a take to spawn
    Posted by GooierChip79591 on 30 Mar 20 at 20:13

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  • Removed Gamer
    Gamer has been removed
    17 5 0
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    A bile bomb is the boomer vomit that is in a vile, usually dropped by CEDA Hazmat on the campaign Dead Center.
    When you have a bile bomb, select it and throw it either at the tank. This achievement will unlock if the tank turns purple, meaning that he has the vomit on him.
  • Lord BurgerLord Burger
    31 Jan 2011 01 Feb 2011 03 Feb 2011
    11 1 0
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    Not only will throwing a bile bomb on a Tank get you an achievement, but it's also a strategically smart move, because the common infected will attack the Tank for you. You'll know if you hit the mark because the Tank will be outlined in purple, just as you and your team members are when they're covered in boomer bile. Wait for the Tank to rush you, or until it's climbing a structure, which will increase your chances of hitting it.

    You can find the Bile Bombs at random locations in each level, and on CEDA agents in the Dead center campaign. CEDA agents are the enemies that wear the large hazmat suits. Remember that the suit allows them to pass through flames, including those produced by molotov cocktails.
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