Nice game idea :)
I like ur drill. Has good colors (Reminds me of my drill ^^)
What was a bit confusing sometimes was that it wasn't so clear all the time when i can dash again. Sometimes it worked one after another, sometimes i couldn't dash, even if everything around me was drilled away. After some more spinning around i managed to dash again. So maybe just a bit polishing there.
OVerall. Good work :)