Defended yourself against the Big Sister without dying.

Hacked one of each kind of machine.

Defended yourself against Lamb's assault in the train station.

Found your way back into the ruins of Rapture.

Finish the game in Easy Mode

Kill 20 enemies with the Wes - 44

Kill 100 enemies with headshots

Complete 5 missions with a full party of 8 in the Cooperative campaign.

Destroy 12 lightning pylons on the Kamino dive.

Complete the game on Easy difficulty.

Cause 50 enemies to fall to their deaths.

Destroy the Star Destroyer.

Control the Terror Walker and destroy all the Terror Biodroids.