Burn an enemy out of a tree with the flamethrower in 'Hard Landing'.

The player has either Harvested or Rescued every possible Little Sister

Complete Corinth River on any difficulty level

Fully upgrade five weapons

Fully research the Bouncer

Successfully invent at least 100 items

The player has completed the game on the Hard difficulty setting

Purchased every slot in all four Plasmid and Tonic tracks

Fully upgrade four weapons

The player has broken Fontaine's mind control

The player has taken a picture of Sander Cohen's corpse

The player has purchased every slot in one of the Plasmid or Tonic tracks

The player has defeated Andrew Ryan