Find all the hidden collectibles.
Unlocked: 14 Apr 2011 00:17:46
STORY TELLER
20Watch each comic without skipping.
Unlocked: 13 Apr 2011 23:59:33
Unlock every level and defeat the final boss.
Unlocked: 13 Apr 2011 23:57:12
Finish a chase level with at least 75% of the Ecto-shield up.
Unlocked: 13 Apr 2011 23:38:18
Defeat the Subway Smasher.
Unlocked: 13 Apr 2011 23:02:10
FULL HOUSE
20Finish an online level with the help of 3 other players.
Unlocked: 28 Mar 2011 08:08:29
COLORBLIND
20Kill a Slime Abomination with the wrong weapon.
Unlocked: 28 Mar 2011 08:03:18
SPEED DEMON
15Get 100% score with the trap.
Unlocked: 28 Mar 2011 07:54:54
HERO
10Revive any teammate 20 times.
Unlocked: 28 Mar 2011 07:46:30
TEAM OF FOUR
15Play with each character.
Unlocked: 23 Mar 2011 15:44:19
ROOKIES
10Finish the first level.
Unlocked: 23 Mar 2011 15:42:08
ROCKSTAR
10Destroy all the expensive LCD televisions in the hotel.
Unlocked: 23 Mar 2011 15:33:54