:) Useful tip when fighting the dragon, let him walk up to that little ledge, it lets you avoid the fire attack without even jumping, and the sonic boom attack, barley hurts you, and pushes you back, the only one you have to watch out for is the claw which if your paying any attention is easy to tell when it's going to be used :)
Glitch, using one of the longer finishers, use adrenaline over and over, alot more points that you would get normally, got 76,059.9 with Super Nova + bringing his health down by freezing + the 5 adrenalines to begin with