Hey, i tried your demo.
I really liked gameplay. It was like combination off all classics.
Graphics were really cute. I love how absurdly massive those shield enemies were.
Glitch beam was very creative idea. At first i didnt even use it as i thought it was just more powerful attack.
Controls were in weird positions thought. I would suggest up key as alternative jump.
It took me while to figure out how to get out of shop. Pressing backspace didnt come to mind.
After i got killed by skeleton my screen turned completely black. I tried to restart and continue, but it was still black. So I had to restart from new game.
Boss battle was really cool.