The game is mechanically simple but fits the theme "unstable" very well. The enemies however weren't that challenging and were all defeated using the same strategy of jumping over them and repeatedly shooting into the masses, where only the quantity made it more difficult. The weapons were all kind of similar but the sniper was by far the most satisfying one, especially when I cleared out about 8 Illuminatis in one shot, a bit more weapon variety would've been great. In addition to that I'd have wanted the progress bar on the top of the screen to be labeled, since I wasn't sure what exactly it meant and only discovered that it indicated the progress to the next weapon unlock in my second playthrough (I failed the first playthrough since I never knew there were other weapons - should've read the description once more). The soundtrack and graphics are very fitting and well made, but the music is a bit too loud. Overall the game is interesting to play but gets very repetitive after a while.
7/10
~Lahusa
To the dev: I don't know why but the "Particles On"-Version did not work on my up to date system, you might want to take another good look at that.