Finish a chase level with at least 75% of the Ecto-shield up.
Unlocked: 06 May 2011 10:00:34
Find all the hidden collectibles.
Unlocked: 05 May 2011 16:48:33
FULL HOUSE
20Finish an online level with the help of 3 other players.
Unlocked: 05 May 2011 07:56:45
STORY TELLER
20Watch each comic without skipping.
Unlocked: 05 May 2011 07:44:33
Unlock every level and defeat the final boss.
Unlocked: 05 May 2011 07:42:38
HERO
10Revive any teammate 20 times.
Unlocked: 04 May 2011 16:38:59
COLORBLIND
20Kill a Slime Abomination with the wrong weapon.
Unlocked: 04 May 2011 16:38:45
TEAM OF FOUR
15Play with each character.
Unlocked: 04 May 2011 16:17:43
Defeat the Subway Smasher.
Unlocked: 04 May 2011 07:30:39
SPEED DEMON
15Get 100% score with the trap.
Unlocked: 04 May 2011 06:51:04
ROOKIES
10Finish the first level.
Unlocked: 03 May 2011 17:30:33
ROCKSTAR
10Destroy all the expensive LCD televisions in the hotel.
Unlocked: Offline