Endings

Pacifist/Neutral ending: spare all the users on your first pacifist route

True Ending: After the neutral ending.

Genocide: Kill every user

Souless: Do Pacifist after Genocide

Sadist: Betray users

Fail: Dial Charles and have him ram his helicopter into the barrier to free the users. Truly the greatest plan.

Dark: Find the Gaster Room.

Dirty Hacker: hack the game.