Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Absolute Chad	Reach level thirty in nightmare mode.
BIG P.P.	Reach level 45 in nightmare mode.
Balls of Steel	Reach level 25 in nightmare mode.
Comrade	Reach level five in nightmare mode,
National Hero	Complete the game.
Poor Hygene	Complete the game without killing any viruses with Toilet Paper.
President of Russia	Reach level fourty in nightmare mode.
Pro-Vaxx Legend	Reach level twenty in nightmare mode.
Professional Home Defender	Complete the game without dying.
Spray Free	Complete the game without killing any viruses with Spray.
The Chosen One	Reach level 35 in nightmare mode.
Tiger Hunter	Go outside.
True Gamer	Reach level fifteen in nightmare mode.
Untouchable	Complete the game without becoming infected.
Virus Slayer	Reach level ten in nightmare mode.
Virus at Home Addict	Reach level fifty in nightmare mode.