Complete the YAMANTAU level.

Complete the VOLGA level.

Install a modification of each category on a single weapon.

Melee-kill or stun 50 enemies.

Kill the Catfish.

Kill 3 enemies using sniper scope while wearing the Gas mask and using the Night Vision goggles.

Spend 500 consumable resources on crafting.

Find a tune on the radio.

Complete the MOSCOW level.

Patch the Gasmask.

No longer a servant, no less than a God.

Have 12 Disciples.