Very satisfying game to learn and beat.
Controls and directions are simple to execute and hard to master. Played without volume so can't comment on music/sounds. Really enjoyed the velocity, felt like I was only limited by my own abilities and less so by the game's defined bounds. I really enjoyed the bullet re-launch mechanism and it felt good to use in conjunction with the slow-mo, and really fulfilled the "matrix" style game play.
The rotation points were hard to see and I felt like I often lost a lot of momentum using them. The time slow felt hard to use because you couldn't shoot in slow motion and so you ended up having to lead your shot, but that might just a learning curve for the user. There were some minor bugs in hit detection, where the grapple contact would swap to being on a different wall when grappling near a corner.
Other than that, definitely enjoyed the game.