I don't enjoy this concept of playing the same level repeatedly with different gimmicks quite as much as the Achievement Unlocked concept. A few of the "puzzles" were basically the same because the level was too simplistic to get too many creative solutions involved. I hope the sequels get a little more creative with the overall layout.
While on the surface its just a physics-based puzzle platformer, it’s actually a significant contribution to the field of metagaming. In the tradition of games like Portal, it uses self-referential humor and fourth wall breakage to facilitate its obscure (and often frustrating) solutions. It didn’t feel good to play even back then, since it’s a Flash game asking you for precision platforming, but I really appreciate the ambition it had.