To add on Royce's post

STR, DEX, and INT all increase your other attributes but I listed what they increase the most.

STR: Increases Dodge, Health, Health Regen (H/s); increases skill damage for warriors.
DEX: Increases Hit%, Crit; increases skill damage for archers.
INT: Increases Mana, Mana Regen (M/s); increases skill damage for mages.
Hit%: Percent chance you will hit an enemy. For example, a hit% of 40 means you have a 40% to hit an enemy (excluding their innate Dodge capabilities). Do note that there is a probable cap on hit%, meaning that a hit% over 100 doesn't mean you are guaranteed to hit an enemy 100% of the time.
Crit: Percent chance of you critically hitting an enemy. Both your normal attacks and skills can cause critical damage, and like Hit%, the higher the number the more likely you'll crit an enemy. Critically hitting an enemy will cause you to do double your intended damage.
Dodge: Percent chance that you will dodge an enemy attack. In my opinion this is just as important as Armor in terms of defending yourself from enemies, since if you successfully dodge an enemy attack you get no damage.
Health: Your standard pool of health.
Regen (Health Regen aka H/s): The amount of health automatically healed per second.
Mana: Your standard pool of mana.
Regen (Mana Regen aka M/s): The amount of mana automatically regenerated per second.
Damage: Damage range of your normal attack, influenced by your main stat (STR, DEX, INT) as well as equips. Note that you will not be doing the exact damage range shown in this window because enemies have armor as well that decreases your damage. Therefore your effective damage, or damage seen when you hit an enemy, is [effective damage = damage - enemy armor].
DPS: Amount of damage dealt per second. This is a function of damage and weapon speed (shown in weapon description) but does not take into account enemy armor.
Armor: Your defense against enemy attack. Every one armor point is equivalent to one less damage an enemy will do to you. Note that enemy's have a "minimum amount of damage" they are able to do to you regardless of how much armor you have. This armor value is different for all enemies across all campaigns.