This was a lot of fun!
Plays really well, and feels intuitive to control. Having to position health drops at the center of your health bar to get the maximum out of them is a great concept that I don't think I've seen before!
There's some great visual touches, like the trail of bubbles you leave behind as you move and the screen shake when taking damage that add a lot of juice.
Loved the little touches too - the title screen is great, and the playable tutorial makes for a really good introduction to the mechanics.
Agree with Phoque below that a time trial mode would be a perfect fit. The game was a blast when I was rushing through and spamming dash, that more encouragement to play that way would be amazing :)