It took me a bit to get used to the controls at first. The dashing sometimes didn't work.
I liked the gameplay element of getting the same abilities the bosses have as a reward!
I'd like if the boss selection would not be 100% based on randomness, I get it that you can just respin it, but I actually got the same boss 5 times in a row before spinning to a new one, which was a bit annoying, as I wanted to try a different one.