There is a kernel of something interesting at the core. Once I read the instructions and could understand what is happening, I was able to get into a bit of a groove.
It would be nice for first players to have some sort of play tutorial so they understand the game without having to read.
I noticed I could shoot through enemies while they "phase in". It would be great if you could make the distinction between partly phased-in enemies and fully phased-in enemies much more clear.
The alpha blend had me guessing, and I was frequently wrong. I spent ammo on enemies I couldn't hit.