Complete the game on "Nightmare" or higher.

Complete the game on "Standard" or higher.

Complete the game in under 2 hours of play time.

Read all story files.

Defeat Stage 2 Nemesis.

Follow Nicholai deeper underground.

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

Leave the clock tower plaza.

Defeat zombie Brad.

Defeat Nemesis on the rooftop.

Place all jewels in the clock tower monument.

Defeat two enemies with a single shot.

Craft an item.