Great score Asure, anything over 30mil is pretty damn good imho. I don’t own the PS2 port anymore, but man, what an awesome game.
The PS2 port has some slight advantages: The music is 44Khz, and you can pause the game probably. I don't own a PS2
To get these type of scores, you need to get the counter up to 1000 asap. This can be done in stage 1 but also by not dying, and then milking bosses and/or some crucial spots in the game.
Getting hit in kakusei mode deducts 250 and triggers autobomb so don't get hit. Raise 'kakusei over mode' to get more green gems dropped. More green gems = longer kakusei mode = more bonus counter..
There's no real "rank" stuff: The game does not get harder when you have 'level 3' kakusei over mode active, so activate that when you get to boss #1.
Bombing also does not generate a penalty. It can be abused to get bosses into a pattern with more bullets faster, or trigger the appearance of enemies that give green gems.
The stage 2 midboss is a prime example of this, watch how it's done in
this video
Boss is damaged with bomb, then first form is killed in time when there is lots of bullets. When the boss is dead, several smaller enemies and a fleet of mid-sized ships generate around 279 green gems for him..
The gem excess is monetized: Mostly at 5:19 when he enters kakusei with around 440 green gems and racking up points. See
this part later on.
Stage two is a real score fest, the video shows him milking the boss for all it's worth as well
