I can't be bothered to fix my hosting anymore but I gave them a quick run in LAN mode.

In general, they're quite big and complex, with a lot of masked areas. I can see that the average game here will be (much) longer than in blur's level - this might or might not be a good thing. I'd place more Toaster ammo all around though, or make crates more effective. The crates in level 1 are an interesting concept but I don't know how often will they fall before someone destroys them manually.

Why do you never use stars in layer 8 backgrounds? They would help level 1 and 3 a lot, which look decent but have very empty backgrounds. I liked the parallax hackery in level 1 though.

The music choices are excellent.

My favorite level out of the bunch is probably 6, because it's not nearly as large as the others, and I like the concept behind it (bricks are more resistant to damage).