I think it is a specialisation you can chose for yourself, something about alternate weapons or such. Havent tried that out yet, so not sure.
The Nemesis is someone you've killed or has killed you 5 or more times in a row without dying yourself in the process.
Say he killed you 5 times, you then finally kill him, you'll get a pin for it.
Nemesis is someone that has killed you five times in the round - I don't think there's a limit on how many times he can die. (I've gone 23-20 in a round, and had a couple nemesis pins.) The Payback pin is what you get when you kill your nemesis.
Upvote
0