Had a really good time playing it. I like the athmosphere in the two levels.
I had a hard time killing the shield ennemy and on the second boss i basically smashed and then took a potion and repeat. Didn't find a strategy to hit him consistently without being hitten.
The visibility in the hell level when falling is a bit frustrating because lava is killing you instantly. Maybe having a map like metroid in the corner would help.
That was really fun ! Congrats !