1) Main menu is very original, though quite over-saturated. I like the font and how you have delivered all the needed info to the player
2) (Suggestion) Should add ESCAPE as a pause key imho
3) You should introduce the player the available actions. As for me, I've found out that I can intently turn on berserk mode and explode just by hitting all the keys just to see if there's something. As for dash, I guessed that it was for SPACE, though it is worthy enough to tell the player about it.
3) The FX are awesome
4) The "out-of-control" mode is very interesting, more like "berserk" mode. I like the idea that you don't lose but something else happens, especially actually making you outrageous. It is rarely presented in games, and it worth an approval
It worth 5 stars for everything.