Kill 100 enemies using nothing but Demon weapons

Complete "Lights Out" Co-op map (Online/Offline).

Complete "Sidetracked" Co-op map (Online/Offline).

Got 10 kills with all ten CQ weapons

Take the Custom Pistol from the Locked Box.

Complete the REVOLUTION level without killing and raising an alarm.

Complete the FACILITY level without killing or raising alarm.

Destroy D6.

Make Moskvin tell the truth with help from the Dark One.

Fall in the Swamp 10 times.

Install all possible Customizations for a Weapon.

Kill 100 Mutants.