The game looks really good, and is quite fun (even though Im not an avid player of those types of games)
I do have to say, 2 things kept bothering me a bit:
1. It had a lot of performance spikes. Not sure if its the webgl version, but had micro hang ups very often, which kind of killed the mood of the fast paced game
2.It was very hard for me to really see when I could dash again. With all of the enemies, bullets, etc, I felt often that I wanted to dash, but couldn't, and had no clear indication of when I could.
Other than that, keep going!