I loved the feeling of this! Dashing through enemies really felt good, and it's a very original concept! The music is good, the sound design has a nice touch, the graphics are simple but efficient, and all the little visual effects really adds to the game. Honestly, this is a solid prototype that I would love to see expanded upon!
However... I don't really see the relationship with the theme, and if I read the description correctly, you are aware of that, and didn't have enough time ^^'. Too bad! So yeah, technically, it's not a very good *entry* to the game jam, because of the lack of theme, but, heck, I had a blast playing it, so it's a good game. Congratulations =)!