As it is now try to have the enemies put a bit more of a fight, the melee one seems fine, but the robot that shoots back is so slow moving that still doesnt put much of a fight (plus the fact that the player is so fast really makes him very useless as an enemy). I know this is entry level enemies, but with a demo level it would be nice to have at least one of them be a a bit more of a threat.
The player character feels a bit sticky when in contact with a wall, in fact if you move diagonally against one you go slow (as its expected) but for some reason if you stop the character gets a sudden push in that direction, its a bit weird but try it out.
The weapons all seem fine, punchy and stuff.
It seems that you are more focused on the tools and engine side of stuff, I dont understand much about that but I didnt get any bug, ran well and felt stable. Good options menu too.