Very cool concept. I laughed when I read the game's title, and again when I realize what it was actually about.
The gameplay is genuinely fun but my god was it challenging. My main gripe, more than anything else, is going back to the start. Aside from that, it felt like the grappling hook didn't always go where I wanted it too and would sometimes get stuck trying to attach to the wrong surface (at least it felt like it).
The visuals were nice, both the art and post-processing effects. The music was a good choice, it fit well. Aside from the somewhat aggravating lack of checkpoints, the gameplay was really engaging.
Good good.