Thanks a lot for the feedback! That's my first published game, and yours is my first comment to it, so that means a lot to me.
I did an update resolving the issue with the respawning, you can read about it in the devlog i added.
About the difficulty one, you'll get used after you play a little. ;)
I may think of a solution about it, but i don't have any ideas currently.
Hint: don't hold the movement keys, tap them.