I found this to be a decent game, but there were some major flaws. First of all, you just ran out of stamina too easily. It seems like you could just omit that feature altogether. I do think it's drawn pretty well. I like the cute little sounds like the boing whenever he jumps. There was also a nice variety of enemies.
Too bad it didn't take a lot of them to drain your stamina. I appreciate how it's clear to understand. It's easy to recognize the medievial music. I just think it becomes too difficult. For the most part, good.