This game has potential, but what should be fixed is the player feedback. When you die, maybe do a screen shake with some blood explosion and definitively add sound effects and music. Also don't forget checkpoints. For one of your first game, it is normal to do these mistakes, so don't give up!

Cool but its kinda hard because the collisions are not really perfect. But nice game.

Success!

Definitely has potential. fun and frusterating.

Good. A couple of things:
1. As you are quite likely to die frequently, restarts should be pretty much instant. The screen wipe is a little annoying.
2. Consider checkpoints for each screen.