Hey! So, i played your game and found some design errors that could be fixed after the jam :)
Firstly, I believe you should think of slowing down the pace of difficulty. Cuz, in a way, you take the player from learning how to jump, to learning how to do the advanced level "SwordBounce from Hollow Knight" technique which i believe is a little too hard. (I'd suggest moving jump to Z and Attack to X)
Secondly, It would be really helpful to see what is happening in front. I made this mistake in Brackeys Jam 2020.1. Try just moving the camera furthur towards where the player is looking at.
Other than that, I believe the game to be pretty well-made. The water mechanic is quite innovative and the visuals are awesome. Keep it up!