Complete the Prologue.

Upgrade each available component for a single sidearm or longarm weapon.

Recover the stash from 4 homesteads.

Complete 'Enter, Pursued by a Memory'.

Hold off the Russian advance

Hold your breath for a cumulative time of half an hour

Kill 100 enemies with explosives

Career total of 50 shots on explosives

Snipe an enemy through his eye

Escape the German assault

Complete the game.

Complete day 9.

Access the secret room.