The funniest thing about the Prometheans is I was more concerned with, and had a harder time fighting the jaguar-esque things than I did the full humanoid Knights... I don't think I ever got taken down by a Knight but the jaguar thingamabobs would swarm the crap out of you if you're not careful. It also seemed like they were taken down more easily with the Beam Rifle and the Knights more easily with the Repeater. Don't know if that was just me but that was my take on it.
My biggest beef is just the poor storytelling. I guess I'll just have to start reading the books if I want a good story and leave the tired old shooter aspect out of it. Meh.