Kill an enemy by knocking or throwing him off a ledge

Defeat the Enforcer with a Takedown

Perform a Shadow groin takedown

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

The player has successfully invented at least one item

The player has defeated Peach Wilkins

The player has taken at least one Research Photo of a Splicer

The player has purchased one slot in any Plasmid or Tonic track

The player has defeated the crazed Dr. Steinman

The player has successfully hacked a security camera

The player has successfully hacked a vending machine

The player has performed at least one successful hack