Ogryn
Up to 5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
60% Strength on your First Attack every 3.5-5 seconds.
30-42%Melee Strength for 3.5s on Hitting 3+ Enemies with a Ranged Attack.
18-30% Strength for 5s when every pellet in a shot hits the same enemy.