Hello!
From what I have found, in v2.7 movement was a little slow. In v2.93 movement is a little too fast. I am actively working now to find a good balance where you don't feel slow, but you don't travel at light speed either (same for enemies).
With regards to the difficulty of the game, I think I might have a small solution to that in the next update. Yes, the game is meant to be hard, but so hard that you will never ever beat the final boss. So I'm gonna work on balancing the difficulty out.
Thanks for your feedback!