I found the sfx and music very loud so I think that should have been turned down a bit, or at least have the option for that. I like the sequence at the start, that was different although it went too fast and I'm a quick reader but was unable to finish in time. The art and level design in this game is amazing and is what really sells it.
The starting area is great and the dragon is epic, made me go "holy shit" when it came on screen. Got a good laugh when I did my first fart, nice touch. I found that the dragon can easily catch you so you really do have to manage the stamina. Difficulty may be a little high but too much. I feel like some kind of checkpoint would have been nice. I know when you die you don't lose progress but I got a bit sad when I'd get far then either burn in lava or get eaten and have to go all that way again.
Overall, excellent job!