Ctrl + F: Antichamber
Zero hits? Huh. Well, I'll make the comparison if no one else's gonna - this game reminds me of Antichamber, especially the parts after you get the variant of the gun that lets you drag lines of cubes around. Same idea, and executed just as well!
Shame about the One-Handed wildcard making the controls worse. Other than that, I have no notes (though I'd like to take a peek at the shaders involved. Also, did I hear different footstep surfaces?)