Agree BGM could be better. I couldn't find better fitting music and I dont know how to compose music. Personally I dont like loud and metal music so i went for this calmer and more comfortable to my ear.
There are probably some improvement area to make the game more interesting rather than repetitive:Heal, boost, balance of the game and etc.
However, with only two people in the team, this is our best by working the project late night beside our main job.
Maybe the difficulty increased a little bit too fast. But it is actually not that hard. You just need to utilize the knockback and time slow down mechanic. I was able to clear the easy mode with only one hit for my best record. I actually cleared the game 3 times, even without trying hard, I was able to clear with half HP too.
Thank you for the feedback, there was alot going for the past week. Our first jam!