Mutant Storm Empire

Thanks for the videos! Really helped a lot. I got my black belt this morning :)
Incase anyone was wondering if you beat a level after you've ran out of time it still counts towards black belt. Had me scared when I was on the final level whether I'd unlock it or not because I finished two of the previous levels late.
Only extra advice I could give is for:
3-2
If you hang back at the left edge of the box at a safe area and then dart to the right side of the box using a tiny bit of blue to keep bullets away you can skip by quite a lot of enemies.
4-1
Stage 1 take out the two tanks and then three of the shields. Destroy all the small enemies and the tanks and then take out the last shield and the generator in a oner. If you leave the generator exposed the small enemies will constantly spawn.
Stage 2 spawn kill the far left most enemies everytime. Move around their spawn point to avoid the tanks fire and everytime you get near the top left of the screen fire at the shields for a bit then back to firing at the enemies spawn point. Take as long as is needed, if you run out of time and complete the level it still counts so take your time.
Stage 3 destroy 2 shields right away then take out the small enemies and then the big cat dog robot thing. Once you've taken out the cat dog robot thing dash into where the destroyed the shields once were and hug the left wall. Take out the rest of the shields and the generator occassionally firing behind you if any of the small enemies get in. Once you've taken out the generator sit where the generator was inside the walls and basically camp. Slowly all the small enemies will come in and you should have no problems taking them out. Once they're all gone the cat dog robot thing should be hugging the top wall, pop out of your little camping area just enough to get a few shots into him and then hide back inside. The cat dog robot thing will fly around the map shooting green squares, take the squares out the same way you did with the small enemies previously and then shoot the cat dog thing again and repeat the process until it's dead.
If you follow that tactic you can easily enter stage 4 with 5 or 6 lives and should have no problem finishing from there on. Just make sure to save blue for the final stage.

I might make a video of it soon as it's all a bit wordy. Just make sure not to rush anything dangerious as time doesn't really matter unless you're going for score.
Good luck to anyone else going for black belt!