For a first project ever this is really well made i gotta say :o
The controls feel quite precise and i like some of the details like the pipes being one way platforms, and the little text prompts like when you come across the spiked area without the dynamite.
If i had to nitpick i'll just point 2 small things out, the character movement is a bit slow and the large map size doesn't really help with that feeling, and the melee range seems a bit short and hard to estimate, as you can often get hit while hitting enemies.
Other than these, it's still solid regardless and that is especially impressive for a first game !
On a side note though, DAT pain scream when you get hit O_o
Anyway, congrats and well done :)