Make at least one kill with every ranged weapon.

Alyosha doesn't get wounded.

Attend the wedding on the SUMMER level.

Damir stays with crew.

Find maps in the laboratory.

Spend 500 chemical resources on cleaning weapons.

Melee-kill or stun 50 enemies.

Complete the YAMANTAU level.

Install a modification of each category on a single weapon.

Find the passenger train car.

Find the guitar and teddy bear on the VOLGA level.

Kill 30 enemies with Tikhar.

Name the locomotive.