c7b27db1_Borderlands_2_Wiki_Guide___IGN__Description
[Skill] Pain is Power [Tier] 2 [Levels] 5 [Description] 
Weapon Damage increased on all weapons except sniper rifles Critical Hit Damage Bonus reduced on all weapons Melee Damage Increased Effects increased while you are on fire.
Psycho (Class) - Borderlands 2 Wiki Guide - IGN