Loved the art and the pulling concept on the enemies! The only thing I didn't quite get the grasp on were the light portalas created when the enemies died. Apart from that, good job!
The idea is that you pull enemies through those walls or "portals" to kill them, as your weapon itself doesn't do any damage. There are also a few bugs which lead to some additional walls spawning, or sometimes the walls appear as small violet cubes which shouldn't be there.