I really liked the boss fight, it was really challenging but fun. I think (but I'm not sure) the range attack was limited or sometimes it wasn't working. But that's just the small thing, the game was still really fun to play :)
Just sometimes the range attack wasn't working, like after 10 times of using it, it stopped working for like 2 clicks and then it came back working, maybe it was because of my internet. Don't warry about it too much, for a game Jam, the game is really good.