I was wondering two things:

 

1. A strategy on how to beat Hades after I use almost everything on Cerberus

 

and

 

2. If i want to replay a world at this point while im at the last boss, when im done replaying it will i have to start over or can i just continue with attempting to kick Hades' ass?

1. My advice in this is to take at least 3 potions when you go up against Hades, since the potions don't need to releoad, and Hi-potions at that, and maybe at least 1 cure spell. And also, I suggest using 2 defence licenses and 1 strength license.

 

2. Yes, you will pretty much have to start the whole thing over since you are replaying the whole episode again.

That would help if i had time between Hades and Cerberus. Thing is in order to barely live through Cerberus I have to use all of my licenses and most of the potions.