Critical Damage is a value that represents the increased damage a given attack will do when performing a Critical Strike. How often you will deal Critical Damage depends upon the higher of your Spell Critical and Weapon Critical. Critical Damage starts with a base damage increase of 50%, and is capped at 125%. NPCs do not have any Critical Resistance, though enemy players will.
There are several ways to increase this:
- Racial and Class passives, such as Feline Ambush and Aedric Spear.
- The Shadow Mundus Stone.
- Champion Point Slottables, Fighting Finesse and Backstabber.
- Major and Minor Brittle.
- Major and Minor Force.
- Additionally some sets contain Critical Damage as part of the 5 piece bonus such as Sul-Xan's Torment, as does the mythic Harpooner's Wading Kilt.