Completely upgrade three weapons.

Fully upgrade all of Sebastian's attributes.

Complete the game on Survival difficulty.

Finish the game without upgrading any skills with green gel.

Open up all the lockers in the save room.

I should get this whole generator panel running just in case. (Ch. 14)

Outrun a gigantic threat in the city.

Kill 200 enemies.

This cave echoes like crazy. Better put the gun away and keep quiet. (Ch. 8)

Escape the Keeper beneath the catacombs.

Who wouldn't reach out for a man clinging for his life? (Ch. 6)

Unlock assault perk 6

Unlock tactical perk 8