The sound design is really excellent. That death sound, and the heaving effort sounds of the jumping blocks, it conveys a lot about this world without the need for graphics.
In the gifs it appears like it is possible to move around, though with a mouse control-scheme I'm not sure that is possible.
It also appears like it is occasionally slow motion, which wasn't what I experienced in the game. I feel like I might have been playing a gimped version of this?
I did start getting reasonably good at curving the bullets... not good enough to hit something more than 1 time out of 10, and the punishment for missing was often the bullet flying back and insta-killing me. The feeling of mastering the mechanic was there, but I got a strong sense of it being developer-hard (or somehow a gimped experience).
I couldn't figure out what to do on the third level with the turret. It's very unclear to me what I should be attempting. The two jumping blocks on the second level gave a lot of feedback, and the more I played that level the better I got at it (I restarted the game a few times, and got to the point where I could reliably beat the second level without dying).
Still, like others have said, the dream of an FPS with curving bullet-trick-shots is very appealing, and there's moments where this feels like it is realizing that dream.
Sorry if this is largely useless feedback in the case that I was doing something ass-backward all along.