- "Meditating on KI brings enlightenment in many forms. Use it to your advantage."
- —In-game description.
Knowledge is a skill tree featured in Shadow Warrior (2013).
Knowledge increases killing effectiveness against both lower and higher demons. Also adds a special weapon to use.
Demonslayer I: Increases damage against lower demons by 10%.
Demonslayer II: Increases damage against lower demons by 20%.
Godslayer I: Increases damage against higher demons by 10%.
Godslayer II: Increases damage against higher demons by 20%.
Headhunter I: Warlord drops his head, which can be used as a weapon.
Headhunter II: Increases heads killing rate by 30%.
Warlords head can be used to save ammo for the other weapons.