Here is the full list of all 9 MachiaVillain achievements.
Kill 300 victims in a game.
Unlock everything that can be researched.
Make some food from a dead dog.
Kill 50 Heroes in a game.
Kill 100 victims in a game.
Your team of minions survive 100 days.
Make two victims fight each other.
Cooked at least one of everything.
Kill 50 victims in a game.