Strength: Increases damage. Get 10 EXP per hit, and 25 EXP for a physical kill.
Defense: Decrease damage. Get 8 EXP when hit, and 20 when you block.
Dexterity: Increase hit rate. Goes up 12 EXP for a hit, and 25 for a critical.
Agility: Lowers enemy hit rate. Get 16 EXP every successful dodge.
Health: Increases HP. Goes up 8 EXP a hit, and 16 EXP if it's more than 25% of your maximum HP.
Wisdom: Increases mana and magic damage. Goes up 12 EXP a spell, and 30 EXP for a kill with magic.