It's a fun game, with an incredible soundtrack.
Sometimes the resolution gets a bit in the way, in the sense that we can't see much further ahead so it's kinda difficult to plan your moves and you have to think quickly. There's some stuttering with the graphics but it doesn't get in the way of gameplay. I like the grappling mechanics and that you're able to select which level you want to play (so if you're stuck in one you can try another, etc)
Also, the main character is full of personality (I mean, it's a fish with sunglasses!)
Good job!