Impossible triple star rank?

[Usami Vision]

There's this boss: world 9's Heavenly Guardian.

I've tried and tried to triple star rank him and yet it seems almost impossible to do.
In my best run of him, I got 11 diamonds (most bosses only need 9) and a final score of over 10,000,000. My Cheats/Handicaps multiplier was x0.90.

I've also done a perfect run of this boss with a x0.70 multiplier. My final score was slightly above 8,000,000. It was a single star rank.

And I've tested this with another boss: there's a minimum diamond requirement (not just score) for getting a triple star rank.

Has anyone ever gotten a triple star rank in this boss or I am not alone?

Also, here's a screenshot of the score screen.
http://steamcommunity.com/sharedfiles/filedetails/?id=599058218

[Andran]

I find it much easier to get a triple star rank with some handicaps enabled, if you do it with a high enough multiplier, you need fewer diamonds.

I first tried to get all triple star ranks without any handicaps, because I thought the stars were just awarded based on the number of diamonds, but that's not true. It doesn't seem to be based on points alone, either. I haven't figured out the formula yet, but basically I feel it's easier with a high multiplier. I've gotten triple star runs on abysmal runs where I barely survived wave ten and used up a couple bombs.

That being said, the divine destroyer is one of the hardest bosses, I don't have a triple star rank yet, either. So, I guess it's possible he's bugged, though I very much doubt it.

[Chi]

I didn't find stage 9 boss to be a rough fight with handicaps + cheats. I do have 3 star rank btw. But yes I agree, he is harder than most bosses.

[Andran]

I just got a three star rank with only 5 diamonds on the Bionic Bee at only 6.4 million points. So, it seems points actually don't matter; just the diamonds and the multiplier.

[CreepyNinja_]

Publicado originalmente por Andran:

So, it seems points actually don't matter; just the diamonds and the multiplier.

Yup, that is true :P
If you find him hard, use set: Speed -15%, Attack -30%. You'll have x1.00 multiplier, but the game should be easier now (still it isn't a way to make high scores) - here you need 10 diamonds to get 3-star ;)

[Usami Vision]

Thank you for all the tips, guys.
I'll try using more handicaps next time I attempt it. :)

[memethievingmaniac]

lowering the speed on it REALLY helped me, too
not like I have a 3 star on that boss yet

[Andran]

That boss is so frustrating. I don't know if I should play in high contrast mode or not. If not I might die of a seizure and if in high contrast mode some bullets always seem to pop out of nowhere.

[Usami Vision]

Publicado originalmente por Andran:

That boss is so frustrating. I don't know if I should play in high contrast mode or not. If not I might die of a seizure and if in high contrast mode some bullets always seem to pop out of nowhere.

High contrast mode helps alot on bosses!
Especially in the more cluttered waves.
Not so much in standard levels where the bullets differ too much.