Vit (soft def) reduces crit damage...
so basically crit only bypasses armor (hard def)...
it's a HR... get 94 (or was it 97?) VIT for stun resistance

LUK/5 = 1 ATK too... but really imho if it's a HR you're better off DSing your enemies to death...
-w-
Critical bypasses all VIT types (soft and hard).
Critical Hit Rate: Your critical hit rating, which does damage that fully ignores enemy DEF, both % and pure value part. Because of difficulty of acquiring CRIT without sacrificing lots of other stats or useful cards/gears, it is recommended it is used on classes that naturally has fast ASPD one way or another. Offensive Skills do not take CRIT into account with the exception of Focused Arrow Strike. Critical Hit also ignore FLEE but not PERFECT DODGE.
The critical rate being displayed in the status window isn't the true value which is applied against monsters. The "status crit" is calculated by dividing current LUK by 3 and adding the crit bonuses from equips/cards. The real crit rate is a little different. Formula : LUK*0.3 + bonuses.
When you attack a monster or a player, the target's LUK influences your critical hit rate. Every 5 LUK that the target has, you lose 1% crit (Which isn't shown in the status window). For example if you hit Angeling, that has 100 LUK, you'll lose 100/5 = 20 crit. This crit tolerance is also known as "Crit Shield" on Doddler's monster database.
Critical is doubled when you use Katar type weapon.
Stun Resistance is dependent on the server configuration settings. Not all servers enable this.
I'd do (in order of Priority) DEX, AGI, LUK, VIT, STR, INT (always nice to have, but INT Falcon Builds are the ways of the do-do)