I'm seeing so many amazing first levels recently! I think the attacks and the story in this one is unique. While it does have some issues like some pauses where not much happens or a weird use of an easing, despite that it's a fantastic first level!
WOW! That is super awesome looking! Love it! Especially the color lasers too! And those two boss characters throughout the 2nd half are pretty cute & awesome looking too! :D
Damn dude, I thought you had some experience at making levels and I just didn't see you, but... It was your first level! That's really good for the first level, I must say!