Very cool shaders! Made it feel like it's an ink sketch on paper, which adds to the surreal feel of it all. Also, cool idea with the messages floating around in the space. Puzzles are interesting, but I'm not sure about the shooter part. The weapons didn't feel juicy enough, and also due to a bug, they clipped out of existence several times, so I only saw my bare hands. Also, the monsters just didn't feel scary for me for whatever reason.
With that said, the game is still very impressive and looks quite unique. Nice job!