Really like the art and the story for this game!
Sounds like some other commenters have already mentioned that the audio was a bit quiet, so aside from that, I noticed that since only the white part of the enemy will flash when they take damage or start attacking, the damage flash will overwrite the attacking flash, and you can't tell when they're going to attack. Small nitpick but otherwise I didn't really encounter too many troubles.
Good work, and congrats on your first "properly built" game!