Board Thread:General Discussion/@comment-39128364-20191124180454/@comment-39385741-20191128185531

From easiest to hardest I would rate them:

3. Asriel Dreemurr

2. Photoshop Flowey

1. Sans

I ranked Photoshop Flowey as harder the Asriel Dreemurr mainly because the fight is so annoying. The music is repetitive, the attacks are repetitive, and the fight is so different from the others. Whenever I play Undertale I always hate fighting Photoshop Flowey.

I find Asriel Dreemurr very easy, because of the ACTs and the fact that it's impossible to die. Seriously, it's impossible not to beat him first try. Plus, since you're on the TPE, you have a lot more experience fighting with 20 HP.

Sans is harder than both of them. Play Bad Time Simulator and you'll understand why.