Trade away everything you have at the Inn and only equip the petrified demon statue. Equip and invoke the power of the statue, and your maximum hit points increase anywhere from one to five hit points each time. It does take a toll, however, as your vitality level decreases by one it is used until your levels reaches three. It will stop at this point. Having a spell caster with an Ihalon spell to increase your vitality is a must, otherwise the next time you nap to increase your level, your vitality may drop to two, causing your player to expire and be permanently removed from the game. This method is tedious, but definitely worth the time.