Very nice game! I really love the almost wire-frame-like style you're going for! The mechanics are also very interesting, though i've had a few issues with the implementation.
What i think you did really well:
The style: again, it's awesome, i love stuff the looks like old-school computer graphics without being incredibly low-poly.
The concept: shooting anomalies/glitches while running through a sort-of maze in a video game? That sounds like an episode plot from like Adventure Time or something (and i mean this as a compliment).
The mechanics: i really like the concept of having to think through when to actually shoot anomalies, at first it seems as if you have to shoot every single one, but actually it turns out that leaving out most of them is the correct play! I'd love this as a puzzle platformer, but going fast is very fun too!
What i think could be improved:
The music: i don't wanna sound rude, especially since you complimented my own music, but i would really appreciate having the option to turn off the music, or to have more variety. Generally it's a good idea to have a longer song with more repeating melodies than to have a shorter song with no repeating melodies
The physics: I actually liked a lot about the physics, the only things i found kinda weird were the gravity not applying when you're on the ground even if it's flipped and how the bullets/grenades you shoot dont seem to inherit your velocity? I wasn't paying close attention so i might've just been aiming badly, but in case they dont already inherit the player velocity i think adding that functionality would be great. And the gravity not applying when you're' grounded just seems like a weird bug.
(Speaking of bugs, i found out by accident that sometimes you can shoot the same anomaly twice while it's disappearing, no idea how it happened)
The level design: Again, i actually really liked the level design, but the last level is kind of confusing as i accidentally skipped all of it. And in the second level you can actually go entirely out of bounds and soft-lock yourself.
All in all, a very good game, keep up the great work!