Hidden Stat Upgrades (Tree of Life spoiler)

[Tuplis]

You should try to 'use' many quest items found in the game, I can't remember which ones but there are many stat bonuses to be gained that way. One I can remember is using the herb or whatever it is you have to use to get the missing polar bear back to its owner (it's in the first area). You get +2 max rage for doing that.