Macintosh

Killing FloorSteam Achievements05/18/11
Team Fortress 2Demo Achievements - Demo Update01/12/11
Team Fortress 2Halloween #2 Achievements01/12/11
Team Fortress 2Sniper Achievements - Sniper Update01/12/11
Team Fortress 2Soldier Achievements - Soldier Update01/12/11
Team Fortress 2Spy Achievements - Spy Update01/12/11
Team Fortress 2The Replay Update Achievements05/09/11

PC

Devil May Cry 4Full Ending07/25/08
Devil May Cry 4Super Costumes07/25/08
Devil May Cry 4Unlock Bloody Palace07/25/08
Devil May Cry 4Unlockable Artwork07/25/08
Need for Speed: UndergroundSlower Enemies08/16/04
Stronghold"Merry Christmas, my liege"01/04/05
StrongholdClean Burnt Land05/11/05
Team Fortress 2Demo Achievements - Demo Update12/18/09
Team Fortress 2Halloween #2 Achievements11/02/10
Team Fortress 2Sniper Achievements - Sniper Update05/22/09
Team Fortress 2Soldier Achievements - Soldier Update12/18/09
Team Fortress 2Spy Achievements - Spy Update05/22/09
Team Fortress 2The Replay Update Achievements05/18/11
Tom Clancy's Splinter CellSecret Room in Training09/15/03

PSP

God of War: Ghost of SpartaUnlockable Costumes11/05/10
God of War: Ghost of SpartaUnlockable Modes11/05/10