Tonic Collector
Collect or Invent 58 Tonics in the Physical, Engineering and Combat tracks
11/30/2009
10:42:58 PM
Ultra Rare 2.7%
Dealt with every Little Sister
The player has either Harvested or Rescued every possible Little Sister
11/30/2009
10:35:10 PM
Rare 21.4%
Broke Fontaine's Mind Control
The player has broken Fontaine's mind control
11/30/2009
9:26:11 PM
Rare 35.2%
Found Cohen's Room
The player has entered Sander Cohen's personal quarters
11/30/2009
8:43:33 PM
Very Rare 9.9%
Maxed All Tracks
Purchased every slot in all four Plasmid and Tonic tracks
11/30/2009
7:44:32 PM
Rare 19.6%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
11/27/2009
3:09:59 AM
Rare 15.2%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
11/27/2009
3:06:56 AM
Rare 39.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
11/27/2009
1:27:36 AM
Rare 45.1%
Three Fully Upgraded Weapons
The player has fully upgraded three weapons
11/26/2009
5:05:49 PM
Rare 29.3%
Ammo Inventor
The player has successfully invented all possible ammo types
11/25/2009
11:31:23 PM
Rare 24.4%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/25/2009
3:09:09 AM
Rare 34.5%