Here is the full list of all 24 Fingered achievements.
Electricute Matthias Bossi 'til he's dust in the wind.
Execute a man for ruining toothbrush mustaches.
Execute a suspect for coprophilia, self-mutilation and assault.
Execute a flamboyant man for littering and sound pollution.
Execute a fishman for lurking by a murky lagoon.
To win the game, you must kill me... Edmund McMillen.
James Id: Too weird to live, too rare to die.... but it was worth a shot.
Execute a sticky suspect for property damage.
Execute a cursed man for bestiality.
Execute a suspect for ass****ism.
Beat Day 7.
Execute someone who smells like copper for trespassing.
Execute a cry baby for matricide.
Beat Day 14.
Beat the game.
Execute a diabetic for looking funny.
Execute someone who has already been buried for pseudocide.
Execute a slimy suspect for peeing in pools.
Execute a woman who is too clingy for violating trademark.
Execute a hemaphiliac for feticide.
Execute the head of the family for playing bad music.
Beat the game without using a continue.
Complete 100% of achievements.
Live and let Jon Evans die.