Here is the full list of all 14 Against Humanity achievements.
First interaction with your creator.
Defeat Spider Flame Queen.
Take revenge for goblins.
Defeat Kruthon in Magmaland.
Why did you do that?
Find wolf cub's mother.
Defeat The Troll King.
Defeat Lirithus in Iceland.
Stop it...
Slay a Dragon.
Defeat Prince Victor in Grassland.
Bring Linette to her mother.
Even citizens are non innocent.
Defeat LightEater King Zlodd.