However, Anakin allowed his rage to get the best of him during his duel with Obi-Wan on Mustafar, causing his anger to blind him and hinder his decisions in terms of strategy in combat, which allowed Obi-Wan to defeat him. This happened again in their third duel, but Vader failed to...
his spree of destruction, Vader suffered grievous injuries in the lightsaber duel on Mustafar that...