Very fun game, I enjoy it. One suggestion I would give is to give the player a model other than a plain ball, like a ship or something. I have no clue how difficult that would be, since I don't know how to use Unity, but I think it would be a nice touch.
Might just be my computer, but I have a tendency to get lagspikes if I am firing the standard weapon while pressing two of the movement keys or quickly changing directions. Also, sometimes the econdary weapon doesn't fire but goes on cooldown anyway.
I got her to the dance floor and completed the level. A chunk of metal promptly knocked her into the water. There are now bubbles coming off of the now empty rainbow dance floor.
I kinda like it. It plays well, except the "keyboard only" option doesn't seem to work. I find that I do well enough anyway. I don't see what everyone's saying about lag. It runs fine on my lower than average computer. Maybe bad on some processors or graphics cards?
 "Battle without End"){kind=icon}
 "Rogue Soul"){kind=icon}
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 "Hexcelle: Arena"){kind=icon}
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It's a tutorial, so basically you can't win the game by keep running in the void ;) But I will make an update about that. Thanks.