OH MY IT HAS SO MUCH POTENTIAL please keep it up!! Its really good :3
Also an idea, if you don't mind it: you can add something like "experimental sample" that turns Colin into some latex creature with a stat boost for a short period of time, like a power up but cooler
The biggest problem at the moment are stunlocks when more than one enemy is attacking you, would be nice to make Colin immune for stun after first hit to give player chance to escape, also, obviously, english translation would be nice to have