A critical hit is a hit to a target that deals extra damage.
Critical Chance is a chance to deal critical extra damage to a target. Players initially start off with a Critical Chance of 5%. Adding points to the Thunder Attribute increases Critical Chance by 0.4%. The higher the critical chance, the more chances of attacks to land on a critical hit and deal bonus damage. The Dark Eye talent skill Meridian Search increases Critical Chance by a percentage amount too.
The Holiday doll increases your critical and dodge chance by 3%.
Critical Strike Damage
Critical Strike Damage is bonus damage that is dealt to a target from a Critical Hit. Initially, a Critical Strike Damage of a Critical Hit deals 150% of normal damage from a critical hit. Adding points to the Thunder Attribute increases Critical Strike Damage by 0.8%. The higher the critical strike damage, the more damage will be inflicted on a target upon a critical hit. The Dark Eye talent skill Meridian Search increases Critical Strike Damage by a percentage amount too.
Mortal is a buff that increases the players's Critical Strike Damage by a percentage amount for a number of turns.
A debuff that decrease Critical Strike Damage is Hamstring.