Unfocused dodging about halfway up the screen works well for me since it stops you getting clusterfucked by the smaller bullets at the bottom; bear in mind you can use the top-left and top-right corners if you need to IIRC (no idea if you can circle around her). As for 5-1... that rapes me sideways, so I have no idea. :V
last attempt
first miss on st4 boss(stupid blue walls)
second miss beginning of st5 for no reason
2 misses on the FUCKING PINK WALL TANK WITH MORE HP THAN THE FUCK I KNOW BUT IT LASTS FOR A FUCKING DECADE
I get past the defense system with 1 bomb and then I die at 5-2 beginning
GAME OVER YEEEEEEEEAAAAAAAAAAH
7,1M, didn't even get the second extend
5-1, what the fuck
the amount of rape makes Pedobear look like a harmless deviant
I'll probably also need like 4 lives for the final boss
It's fucking HARD