This is what I'm doing.
~ Hard/ Classic
~ No shrine/ dungeon/ towers/ forest skirmishes (Essentially no grinding at all)
~ No resets
~ No retreating
~ No Lion Springs
~ No collecting cogs (only 3 uses)
~ No forging
~ No renowns
~ No DLC
**Must use all characters and they must all survive.
Its been quite challenging yet also pretty fun.