Each player gets 3 stat points per level up, these can be distributed on any of the five stats:

Strength - Increases the sword damage. 3 Stat points on strength increases the damage by one.

Endurance - Increases your protection. 3 Stat points on endurance decreases the enemy damage by 1.
Endurance also increases increases the health, 1 more health per stat point.

Agility - Increases the bow/arrow attack. 3 Stat points on agility increases your damage by 1.

Wisdom - Increases the fire & earth spell damage. 4 Stat points on wisdom increases the damage by 1.
Buff spells require wisdom. Each stat on wisdom increases your mana by 1.

Intelligence - Increases the water & wind spell damage. 3 Stat points on intelligence increases the damage by 1.
Each stat on intelligence increases your mana by 1.

Level - Each level will give you 2 stamina.

Fire & Eart - This is resistance against Intelligence spells.

Water & Air - This is resistance against Wisdom spells.

Dodge - This is resistamce against arrows.

Speed - This is resistance against swords.