I'm a fan of lander games, but I can't say I've ever played one quite like that. You had me laughing. Nice work! There's a donut in our game, too -- but it's a little more hidden.
Some of the hitboxes felt a little weird when there were saws at different depths (collisions seemed like they are based on camera overlap, maybe?). That's only a minor thing, though. Very entertaining game, albeit a little shorter than I would have liked (I'd have happily played another 10 levels).