Things I liked:
Artstyle:
Always glad to see Ansimuz's stuff get some love.
Controls:
Bouncing was fun, and I found the fire boost mechanic interesting but a little clunky.
Music:
The music worked very well, although I'd suggest a more creepy theme for the boss battle.
Things I disliked:
Combat:
Combat did not seem to have much impact for me, and the single melee attack made it pretty difficult.
Jumping:
Jumping seemed pretty floaty to me.
Blind Jumps:
There are a couple places in the game where blind jumps are required.
Bugs:
I encountered several bugs in the game, including at one point where I could fall off the edge of the map and get softlocked, and an invincibility glitch.
Synopsis:
A little rough around the edges, but the core game itself has really good potential, with a little work you could have a really fun game.
Thanks for your entry. :)