The basis is there, but it gets repetitive really quickly. I see other types of enemies on screenshots but those never appeared for me. Having to move toward the enemies to be able to shoot them was a pain in the ... to be honest ;P Aiming with the mouse so you can walk one way and move the other way would be a better control scheme I think.
As it stood now I was quickly running away from endless enemies who all grouped together, so it was like being chased by 1 unkillable enemy because once you kill one in the pile, there are still enough left and they spawn faster than I can kill them.
I haven't been able to test the multiplayer aspect of the game, which is a shame because having multiplayer in a jam game is quite impressive !