Stage 6 UFO lunatic is driving me insane.
It's really hard to get 7 bombs, live through midboss Nue, and then spam. I usually end up with 5/6.
Opener is easy (comparatively), but then I can't do a SINGLE attack without bombing or dying. First one is lolwall unless I'm missing something, I don't get it. Next is laser barrage that's nearly impossible to avoid, next is butterfly lasers which I don't understand fully, next is gigantic spam that's really hard to avoid, next is tons of curly... things + aimed stars that blows my mind, then comes the move-around-the-screen attack where it's really hard to do damage, then comes Shinki's attack which I can usually one-bomb, then comes the fly-around-the-screen spam that gets so think it seems nearly undodgeable, then comes her last card which I've made it too five times with 0 resources and died at once it hits its harder stages.
tl; dr - RAGE
Actually, now that I have this written down, it might actually be possible if I 1-death Shinki and go in with 6 bombs. Away!