Augments are items which can be placed into Augment sockets, usually on Equipment items. Once socketed, they can be replaced by other Augments, but cannot be removed by normal means. The types of Equipment which an Augment can be placed into and the corresponding benefit provided are listed on the item.

Critical Hits deal +100% extra damage (i.e. twice as much damage) by default. Critical Damage Bonuses can further modify this value. Attacks usually use your weapon's base Critical Hit Chance, while Spells and some other skills have their base Critical Hit Chance listed on the skill. Most modifiers to Critical Hit Chance are percentage based. For example, gaining 100% increased Critical Hit Chance on a base Critical Hit Chance of 7% would result in a final Critical Hit Chance of 14%.

Multiplies the damage dealt by Critical Hits. Default value is +100% (i.e. twice as much damage).

Any damage that isn't damage over time is Hit damage. Damaging Ailments which result from a Hit will calculate their damage from that Hit, and will not subsequently have Damage modifiers applied directly to them. As a result of this, raising Hit Damage will result in more powerful Damaging Ailments innately.

Spells are skills that use raw magic to destroy your enemies. Attacks are not Spells. Spells have their own base damage, cast speed and Critical Hit chance determined by the skill. They do not benefit from a weapon's inherent damage, attack speed or Critical Hit chance.