Wow, this is one complicated game. It's not so much that it's hard, it's just that it's more frustrating. I was confused at the sheer number of levels there were in one world. I guess it was just something I wasn't prepared for. I did get used to the changing gravity thing pretty quickly. The main character looks like a hamster with squid legs.
Looking at your name, I think that was the intention. I felt the music was also pretty moving and pushed the game along well. I wish there was some means of defense I had. Of course, I did have some fun with it being more of a challenge. This is worth checking out!