The game seems pretty fun! I was compelled to beat all of the levels. The only thing I would say is I feel like the short dash doesn't get much use. I beat the game using only the fast dash, and you really don't need to kill a lot of enemies to fill the vial. I found that if you just hold F for 70% of the drain animation, it gives you enough time to dash to the next enemy. So the game feels a bit easy; you can kind of tank the light most of the time, and you still have enough blood to survive and fill the vial. With some gameplay difficulty tweaks and some more levels I think you could have something really cool! Great game guys