Frag Steal
Kill all enemies in a single Cooperative Concentration Mode.
8/17/2009
12:05:42 PM
Rare 38.9%
High Noon
Kill 4 enemies between 12:00 p.m. and 12:15 p.m. (local time, ranked play counts).
8/17/2009
11:48:02 AM
Rare 22.8%
Untouchable
Finish any chapter, except for VI and VIII, without getting severely wounded.
8/17/2009
11:16:58 AM
Rare 30.2%
We Came, We Saw…
Complete the game on 'Casual' or 'Experienced' difficulty.
7/28/2009
1:08:09 PM
Rare 30.9%
Disaster of Biblical Proportions
Complete the 'Central Park Cemetery' level.
7/28/2009
1:08:03 PM
Rare 30.9%
Let Me Guess, Gozer Worshippers
Complete the 'Lost Island Rising' level.
7/28/2009
11:59:36 AM
Rare 35.4%
I Don't Want My Face Burned Off
Purchase all upgrades for the Meson Collider.
7/28/2009
11:17:20 AM
Rare 33.4%
We be fast! They be slow!
Purchase all upgrades for the Dark Matter Generator.
7/28/2009
11:16:58 AM
Rare 34.5%
Somebody Saw a Cockroach on 12
Complete the 'Return to the Sedgewick' level.
7/28/2009
11:06:29 AM
Rare 40.5%
Ghost Fever Grips New York
Complete the 'Museum of (Super)Natural History' level.
7/27/2009
6:34:39 PM
Rare 43.2%
