Find 35 treasures

Paralyze a licker's sense of hearing.

Customize a weapon.

Defeat an enemy with a knife.

Use Wooden Boards to board up a window.

Increase your inventory slots.

Counterattack with a sub-weapon.

Defeat 30 enemies with gold weapons

Just prior to City Chase, stand perfectly still for 30 seconds (stage demo fail)

Shut down the Cleaners' drill and eliminate Javier Kajika.

Pick a three pin lock in under 15 seconds

Open 5 lockboxes

Stealth kill 5 enemies in End of Zoe.