Campaign Of Carnage is an explosive ride! It's oddly similar to Borderlands (2009) second DLC Mad Moxxi's Underdone Riot, using several arena style combat areas, but where that DLC fails Campaign Of Carnage soars. The story is a fun time, a simple tournament that leads to multiple boss fights and a worthwhile main antagonist. I'm happy to say on replay that this DLC is still a ton of fun.
Another meh DLC from Gearbox, which is too bad since BL1 had such great DLC. The story is okay, but it's the dialogue that makes the DLC funny. The loot is meh from what I've seen, though it's the easiest way to farm a Unkempt Harold if you want one. The raid boss is better than the ones form the others, both in how fun he is to fight and loot drops. The normal boss fights are poorly designed. Overall it's really only a good buy for those who really like BL2 for story/loot.
I wonder if the person that suggested the lesbian vore theme of that boss fight convinced everyone on the studio that it would be very funny to have that or everyone else working on it just accepted it because the bro dudes at Gearbox were just too deep into fetishizing female characters and couldn't stop now.