The player has restored the forests of Arcadia

The player has successfully invented at least one item

The player has defeated Peach Wilkins

The player has successfully hacked a security camera

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

The player has successfully hacked a safe

The player has successfully hacked a turret

The player has performed at least one successful hack

The player has shocked an enemy in the water

Earn 1 star in Special Ops.

Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.

Assault Makarov's safe house.