Beautiful presentation, art, and character animation...
There is a delay on the jump, moving the character back and forth, and running then jumping. It took me about 30 times to cross the spike pit because it had to be timed perfectly.
I love the art! Just some things..
1. the jump mechanic is too weak, I suggest bumping up the strength by no more than 10.
2. I can lose life by hitting my own fire ball - it got stuck on the side of the platform and when I hit it I lost life. Maybe they should disappear or slowly evaporate after a certain amount of time
3. The game over screen needs a button to restart the game