Stylish design and original concept. I love the idea of playing as the villain.
The art and environments are all quite detailed and look good. The animation and movement of the characters is quite realistic.
There are some bugs that interfered with my full enjoyment of the game. During the intro cutscene, I got no visuals; it was audio only (though the audio was still pretty amusing). Also, the behavior of enemies was somewhat wonky: they would sometimes appear to "come back" when defeated, though it was graphical only; they could not longer damage the player.
There are some minor issues that should be relatively easy fixes: Weapons and tools should not respawn after they've been picked up. Some kind of block should be implementing so the player cannot enter the area where the soft-lock is until they get the grappling hook.
Lastly, I had a game-killing bug not long after getting the grappling hook, I was transitioning between two screens when I just fell into the void, and could not emerge.