Full damageless fight against Sans, the final boss of Genocide.
Playlist for my full No Hit playthrough:
• Undertale Genocide No Hit Run
Play the game yourself!
http://store.steampowered.com/app/391540
Undertale is an awesome game made by Toby Fox. It is an RPG with bullet hell and avoidance elements and has a heavy focus on choices and their consequences.
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