Silver Hellsing
Joshua. Day 7. Pork City.
AKA THE FIRST TIME YOU FIGHT HIM. Mmkay. Lets see. The Grim Heaper sticks in one zone at a time and has Taboo noise in the other. Whenever you damage him enough in his Zone he will absorb all the Taboos in his Zone(but not take away the ones on the opposite) and Transform into Leo Cantus. If you erase all the Taboos, Grim Heaper will teleport to the other Zone and summon more Taboos. After losing half of the yellow bar, he will immediately Transform whenever teleporting to another Zone instead of waiting to be damaged, and will summon more powerful groups of Taboos. After losing his entire yellow bar, he will Transform into Ultimate Leo Cantus and stay on Joshua's Zone, meaning that Neku's only use from now on is to not take damage and pass the Light Puck. Ultimate Leo Cantus is dangerous, he attacks extremely fast and hurts a lot. Play extremely defensively with Joshua, I'd go as far as to only attack with Jesus Beams and
never do finishers, because they leave you open for too long and you get to keep the Puck, so you can do full damage to Grim Heaper. Burn down the rest of the green bar and you win.
I dunno how much this helps. . . but I believe in you Silver!! YOU CAN DO IT!!! *CHEERS LIKE A MAD PERSON*