Survive the 100 seconds in Survival Mode.
Survive the 300 seconds in Survival Mode.
Survive the 600 seconds in Survival Mode.
Survive the 800 seconds in Survival Mode.
Survive the 1000 seconds in Survival Mode.
Survive the 1200 seconds in Survival Mode.
Wear a Ukrainian jacket and hairstyle.
Complete the mission "Second Mentor" without taking the first aid kit in the corner.
Complete the mission "Dealing with Anti-Waifu" without picking up additional ammo.
Complete the story mode.