Hello! Just wanted to give my feedback from the demo. Good job so far! The pixel art has a lot of energy and is great to look at. The music sets the mood greatly as well.
As far as criticism goes, I think save points should restore your health. I ended up getting to a pint where I had only 2 HP and between the bats that shot projectiles and the slimes that shot homing bullets when you hit them, I couldn't get too much further in the game. I think having save points restore health will help alleviate some of the challenge haha