Thanks for playing the game! We might probably either increase's the bats' hurtbox size or reduce their number overall whenever the rating period ends, since they've been a recurring complaint.
As for the keyboard bindings part, what would you suggest would be a better distribution? The game was meant to be played with a controller, so choosing keyboard bindings that made sense was a bit of a challenge.
And about the potion angle thing, being able to use the mouse for aiming doesn't sound like a bad idea at all. The current system is heavily inspired by how games like Super Metroid and Hollow Knight handle aiming. I'll write this down and see what I can do after the rating period.
Thanks for your feedback and I'm glad you enjoyed it!