Hi! I tried it for a bit. I like the 3D models, it gives it kind of a comic feel.
I thought the controls were a little hard to use. I really wish that WASD still worked while in the shooting mode. I understand that you might want to have some kind of "turret" mechanic, but if you wanted to do that then I think it would need to be visually clearer why you can't move while shooting. And I think it would be better if you could just move while shooting. Also, I think the turning speed in the shooting mode is too slow.
When I killed enemies, it seemed like they dropped things, but I couldn't tell which ones I could pick up and which ones I couldn't, and there wasn't any feedback like a sound or icon when it seemed like I did pick something up.
Also the enemy AI seemed odd, they didn't seem to react much to being shot at. They did shoot sometimes, and I usually died fast because of being unable to dodge without exiting the shooting mode.
Hope this helps!