What an awesome game. The art is really good, the shader effects elevate the visuals even more, and the trail and lighting effects of the Bioweapon just looks stunning!
The puzzles have a lot of depth to them, especially as you're halfway into the game. The game also surprised me by having a lot more levels to it than I originally expected! My favorite puzzle was probably the one with the rat and the guy, just because of how the solution to that one caught me off guard.
The sound effects are awesome. I especially love the one when you're bouncing around as the Bioweapon. There's something particularly satisfying about that one.
Honestly, this is just a really impressive, very polished, well put together experience. I really liked playing it. Very well done!