haha I laughed at the idea of the worm going all rambo as soon as I read the game title xD
I think you guys nailed the story/setup, the art and the sound effects. I believe however that the concept of the game could have been more focused on the worm actually going "rambo" and spreading carnage around, instead of having a lot of platforming/exploration (and I have to agree with other comments, the wall jump was a bit too harsh, maybe a bit overused, though the momentum thing was a neat idea).
I seriously think you could have a good thing going here, even more so if you decide to push harder on the "-this is a nice day to hunt me some bird-, said the worm", bombastic aspect of the game.
Thanks for the good laugh!