there is a cheat in this game: go on inventory, click on a item and drag it with you and click on OPTIONS. then you have the item with you on options and then you click with the item on the red. then you destroy the items and absorb their stats...i have 3000 str, 1000 magic, 2000 vitality and 1500 speed because of this...enjoy ;P
against the guy with 1,000,000 health you have to use the skill subversion which makes hime damage himself when he heals. and you heal when you are supposed to attack...