Nice art, it looks like something I would have played on the snes and the music is nice and fits well. I think some enemies have to much life for what they are, for example: the bats, they should die in one hit and only be a danger in swarms or when strategically placed to interfere with the player. The bandits are quite tankier considering they dont look more stronger than the bunnies, or least, that's my opinion.
Overall, it's a nice demo, keep up the good work.