Just had a look at your game.
It had this faint cross glitching throughout the game (maybe a navigation debug thing).
The art style is nice even though it seems to be a work in progress.
You mentioned wanting to add in player death and other mechanics, if you do, you may want to look at the time between attacks. I started with the Axe, and if I hadn't been invulnerable, I probably would have died multiple times waiting for the next attack to start.
Otherwise a good start.