Really fun action platformer, once I got used to the controls and the physics of the character I had fun just moving around using the right-click to go at light-speed and killing monsters.
SFXs give enough information about what's going on, maybe add some spatialisation to understand where it's coming from.
I kinda got overwhelmed when I got in the main hub, maybe don't show everything available the first time (I just saw that's it not supposed to all be unlocked so you can ignore this line).
I only tested the singleplayer. Also I didn't find a quit button when ingame so I had to Alt-F4.
Overall it's promising and already fun to dick around with, Good job.