Completed the silver stamp card

Unlock all safes, lockers, strongboxes, and pickable locks.

Defeat Stage 2 Nemesis.

Collect all weapons in the campaign.

Leave the clock tower plaza.

Defeat zombie Brad.

Destroy a Charlie Doll.

Cause Nemesis to relinquish an item.

Stop Chrome Dome before he can rebuild the old Technodrome in Story Mode.

Earn 150 Stars in Career Mode

While driving or leaning out of a vehicle, kill 25 enemies (Campaign only).

Kill 3 different bosses (available in Easy mode)