One of the most unique aspects of Undertale is the fact that you don’t actually have to kill a single enemy. You can play the game as a complete pacifist and are rewarded for it. However, anyone who opts to go the opposite direction and aim for the genocide ending will be faced with the most difficult boss in the game: Sans. The normally cheerful and joking skeleton will show up as your final opponent to stop your rampage and will probably be successful. Each of his attacks, which play out...
