If you want some enemies, go play classic platformers. This isn't a kind of a game for classic enemies, as with for example Portal they made the Turret you can defend against with the Weighted Storage Cube.
But here it is just too much of a Gamejam game to be really that detailed to have any kind of an enemy that fits in the setting.
A lot of work was put into the glitchy aspect, and I agree the SFXs should have been a bit more subtle, but it isn't that bad if you don't have max volume in your headphones.