[SPOILER WARNING!!!] The 3 most difficult official Undertale bosses beaten... Press space or click to go to next... Use arrows Keys to go forward/back Least Difficult To Most Difficult: 3. Undyne The Undying (Kind of Hard, took me like 1.5 hours) Website to Play: https://turbowarp.org/669974432 2. Sans (Difficult, took me around 5-7 hours) Website to play: https://jcw87.github.io/c2-sans-fight/ 1. Pacifist Sans (INSANE, took me like 2 weeks) Website to Play: https://ut10-battle.undertale.com/ THESE ARE ALL OFFICIAL BOSSES, JUST RECREATED IN A WEBSITE. FANMADE UNDERTALE BOSSES: 5. THE Roaring Knight in Undertale (Won 3rd try, pretty easy) Website to play: https://scratch.mit.edu/projects/1222405386/ DELTARUNE: 0. The Roaring Knight ON SCRATCH I FINALLY BEAT THSI KNIGHT. (Spent like 5 months) Website to Play: https://turbowarp.org/1197449054/fullscreen?hqpen Tip: CHOOSE SHADOW MANTLE ON SUSIE!!! FANMADE DELTARUNE: 4. Scampton The Great (Pretty easy, beat it in 3 tries) Website to play: https://scratch.mit.edu/projects/879723701/
CREDITS TO TOBY FOX FOR UNDERTALE! CHECK OUT UNDERTALE! DELTARUNE BOSSES TRYING TO BEAT: Working on beating the Roaring Knight on Scratch! Description: Could barely even get halfway... Website to Play: https://turbowarp.org/1197449054/fullscreen?hqpen Working on beating Spamton Neo SNOWGRAVE! Description: Pretty close to beating this... Website to play: https://scratch.mit.edu/projects/829289954 Working on beating the Roaring Knight Phase 2! Description: THIS IS SO UNBELIEVABLY HARD. I CAN'T EVEN GET HALF WAY... If this was on the list, it would be THE HARDEST ONE. Website to play: I beat Mike's Big Showdown! Description: pretty difficult, not the Hardest one but it's definitely up there as one of the hardest. Website to play: FANMADE UNDERTALE BOSSES TRYING TO BEAT: working on beating (REAL) True Genocide Muffet! And I got the closest on this one! Website to play: Working on beating THE FINAL EXPERIMENT! Website to play:
