3 Super Tyrants Slain
Shut Down or Destroy 5 Turrets
Deliver all 5 virus samples for your team in Dispatch's Biohazard Mode
5 Tyrants Slain
Kill 5 enemies with Rocket Launcher
Complete an Echo Six Expansion mission with no human player incapacitated from death or infection.
Complete Longest Yard
Complete The Places We're Meant to Die
Complete Root of All Evil
Beat an Echo Six Expansion Pack mission with the 3 male characters in your party.
Gain S+ on all U.S.S. missions on Veteran or Professional difficulty
13 Bomb Dogs Detonated
Kill 13 zombified teammates.
As Tweed, use C4 to open door in Foundry
Kill every zombie in the Park before leaving.
Complete By the Trail of Our Dead
Complete an Echo Six Expansion mission without killing anything with a gun.
Continue playing to unlock this secret achievement.
In Heroes mode, eliminate 4 Heroes in one game.
Complete Nothing is as it Seems
Beat an Echo Six Expansion Pack mission with the 3 female characters in your party.
Complete I Now Know Why You Cry
Kill another player with Crucible in a Foundry Versus Match
Purchase all available weapons.
Purchase 15 weapons.
Kill 13 zombie dogs (lifetime)
Achieve a 10 kill streak in a Versus match.
Purchase 5 weapons.
Kill 103 enemies with incendiary rounds (lifetime)
Kill 5 enemies consecutively while using a zombie as a shield.
Complete all U.S.S. missions with an S Rank.
Upgrade all abilities for all characters to its maximum level.
Purchase all abilities for all character classes.
In Survivors mode, have all 4 players on your team Survive the game.
Complete 98 Versus games
Complete all U.S.S. missions on Veteran.
Complete all U.S.S. missions on Professional.
Play at least one match in every Versus game type
Force 25 enemies to drop G-Virus Samples in Biohazard (lifetime).
Achieve a 5 kill streak in a Versus match.
Kill 10 enemy players in one Versus game with CQC.
Kill 5 players in one multiplayer game with CQC Kills.
Collect all 7 Raccoons.
Kill an enemy with each weapon type including special weapons.
Collect 3 G-Virus Samples in one Biohazard match.
Fully upgrade all abilities for one character class.
Heal with 101 Green Herbs (lifetime)
Kill an infected teammate with a headshot before they become a zombie in any mode.
Kill 100 zombies with CQC (lifetime)
Fully upgrade an ability.
Complete the sixth mission of the U.S.S. campaign.
Complete the fifth mission of the U.S.S. campaign.
Complete the fourth mission of the U.S.S. campaign.
Purchase all abilities for one character class.
Purchase an ability.
Complete the third mission of the U.S.S. campaign.
Kill 5 enemies by causing Blood Frenzy in a single campaign game or multiplayer match.
Complete the second mission of the U.S.S. campaign.
Kill a Licker that is grappling a Teammate.
Witness the beginning of the Raccoon City outbreak.