So I was reading through this thread
And to get the Nemesis Medal you need to Execute your Nemesis 75 times. Now that's just the Bronze one I think.
The problem is, to actually get a Nemisis it requires you to LOSE. You have to be killed 3 times by the same person for them to become your nemesis AND then Execute them. I don't get it. Seriously 3.0 now requires us to get killed.
Swift Vengance - The Swift Veng medal requires you to kill your last enemy, this would be more suitable.