Reached at least 100 stun attacks or sleep-inducing attacks.

Wearing a cardboard box gives you that feeling of inner peace.

Finish game without killing anyone

Sneak up on The End and hold him up

Collect every type of fish

Finish the game on any difficulty

Defeat Shagohod

Use a knife to remove a bullet

Call one Healing Radio frequency

Defeat The Fury

Blow up a munitions shed with TNT

Defeat The End

Lure a guard with a girlie magazine