Finish the game using no potty.

Break all toilet doors.

Complete the catacombs without destroying any cell gate.

Have 90 bullets or more.

Obtain Robert's photographs.

Put 20 guards to sleep.

Find 15 secrets in the game.

Complete the part "Engineering problems".

Defeat HUGEEL firing just 6 torpedoes.

Craft a Molotov cocktail.

Complete the part "The barracks".

Destroy 5 trucks in the north parking lot at the barracks before Machine Mike does with his tank.

Reach level 6.