When you are fighting Phantom take Alastor and keep jumping on his
back and then slash him! When your Devil Trigger is full Go into the
fly-around mode by pressing L1, jump and R1. Then keep firing. Do this
as long as he's alive!

When facing Nelo, which is "very Hard" to beat, get the
Ifrit on and keep jumping and then hit him. Make sure he won't hit you
with the glowing balls he throws... When your Devil trigger is full go
stand near him and press L1 and then hold R1. Now keep hitting him you
will be 10 times faster then normal and he can't hit you, also avoid
him when his sword is blue, he is planning an attack then. Also jump
twice when you're on a wall and then hit him, the impact will be
greater.

I'm not the greatest Hero off them all so I don't know how difficult
Griffin is in the Hard mode but anyway get Sparda and keep slashing
his blue glowing belly. And the rest you'll have to find out yourself
about this character!!!

Mundus, the greatest of them all! I hope you've done some
flysims before because he is nasty!!! he will do anything to destroy
you!!! Keep flying in rounds and also keep shooting on his hart. When
he dies you get to the next level and then I've got to go!!! Sorry,
more next time!!!