Luck
Increases Critical Ratio by .2% and Lak Drop rate
Vitality
Increases Health regen by .2% and Max Health by??
Intelligence
Increases Mana, Magic Atack and Magic Defense
Strength
Increase Physical Damage by 1, Max Weight by .2%, Attack Speed by .2%
Agility
Increase Evasion and Attack Speed all by .2%
Wisdom
Increases Mana regen, Magic Defense, Magic Resistance all by .2% and Cast Speed .5
Dexterity
Increases Cast Speed by 2 also Accuracy by .5 and Bow Damage by 1.5
Mentality
Maybe Accuracy and Magic Defense?
Mag. Def.
Magical Defense good against ranged attacks (pixies)???
Mag. Atk.
Increases your magic attack by???
Mag. Resist.
Negates Side effects of Spells (stun, burn etc..)
Phys. Atk.
Increases your Physical Attack by 1
Phys. Def.
Physical Defense good against melee MOB
Accuracy
Increases your chance of hitting by ??%
Evasion
Increases your chance of not getting hit by ??%
Move. Speed
Increases your movement speed by 1%
Block Phys. Def.
Shields: increases chance to block melee attack
Max. Weight
Increases Maximum carry weight by 1
No. of Slots
Number of creatures you can have out
Atk. Speed
Increases your attack speed by 1%
Avoid. Inc.
Maybe lowers threat level???
MP Regen
Increases your mana regeneration by 1%
Max MP
Increases your mana by 1
Max HP
Increases your health by 1
Critical Ratio
Increase your chance of hitting for a critical
Critical Power
Increases damage during a critical hit

Thanks,
jdhogue7

Resource : http://rappelz-forum.gpotato.com/viewtopic.php?f=4&t=78042