Looks great. I love how you managed to make it look so good in 3d with these textures.
If you were to add a bit more feedback to shooting, to really make it feel satisfying, it would make it more enjoyable to play with little effort on development - simple animations and sound effects is all you need.
I find it funny that we both used the same sprite for "Summoner" enemy, coincidence or the same multiverse? ;)