+3.5-5% Strength for 3.5s on Hit. Stacks 5 times.
+5-8% Strength for 4.5s on Kill. Stacks 5 times.
+5-8% Strength for every 10% of magazine spent during continuous fire. Stacks 5 times.
Gain +7-10% Close Damage for 3.5 seconds after killing an enemy at close range, stacking 5 times.
The pickaxes got a range buff and they're amazing.
The Karsolas at its base is already an amazing horde weapon so we can build it for high priority targets with a little flexibility. On full stacks of Heavy Hitter, Headtaker, and Slaughterer you should be 2-shotting Crushers, Maulers, Mutants, and Ragers with heavy spam. Flak and Maniac aren't bad perks but are perhaps best suited if you won't have the power boost of either Headtaker or Slaughterer.
Mk 5 Ripper is Ogryn's best gun for its sniping capability and burst damage in a pinch. Always hipfire and learn to QQ cancel to reset its recoil.
Pickaxe Pro-tips (TM):