This was a fun little game with some fun ideas. I liked that the last boss was an amalgamation of the first 3, which made the game feel like it had a good curve. I thought the animations were good for the most part, but I might rework the sword a little. I think the followthrough on the slash is good, but to have it feel the best to the player, it would be better if clicking made the slash full imediately, and then it kind of goes away more slowly (If that makes sense) Also, to make the dash a bit more useful, I think it would be good if you were invincible while doing it. I beat the game without ever really needing to use it. A suggestion for your AI as well, I think it would be a good idea for the enemies that bounce around the room to have it so that every so often it changes to a random trajectory to keep the player on their toes. When I beat the red guy, he ended up in a pattern where he just bounced mostly straight up and down making him pretty easy to beat. Overall though, great job for your first jam!