Spend 500 chemical resources on cleaning weapons.

Melee-kill or stun 50 enemies.

Duke and Damir stay with the crew, Alyosha doesn't get wounded.

Pass the putrid tunnel.

Spend 500 consumable resources on crafting.

Complete the TAIGA level without attacking anyone or getting noticed.

Take part in the Admiral's tea party on the TAIGA level.

Make at least one kill with every ranged weapon.

Find a tune on the radio.

Damir stays with crew.

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

Drive the Bukhanka.