Boring.
Dropped into a Collector / Gold. I like collectors because I take great pleasure in popping off their big tops and those very nice booms you get from possessed abominations.
Anyways, a geth (with a tag) and a drell and a turian were in the match. I was bored when Mr Geth popped off missiles at spawns, understandable if they were target waves but they were not. Wave 7, 8, 9, pop, pop, pop, pop, pop, pop, Mr Drell joined in, pop, pop, pop. Uh...ok, that leaves me with nothing much to shoot at except the leftovers, no challenge, so what was I doing there? I wanted to leave then but decided to get the few credits. I did very little and just picked up the stragglers. I didn't bother when they converged on the last few targets; scions, praetorians. On Wave 10, take out targets. I did nothing to help out because I didn't want to, I left them to slug it out which they did. I died a couple of times, staying out of the way.
When players do such things, the minute they fire at the group mob of every starting normal wave that just spawned for no credible reason, I for one, will not try so hard for the rest of the match; I'll do the pizza, escort, disabling devices objectives but the rest, they can duke it. I mean it's pretty obvious what they wanted so I just let them have it. *shrug*
ME3 MP is not as great a test in tactics, reflexes and group sync as UT since it's all A.I. mobs, not human opponents, that come in predictable waves but the moment people remove the available challenges there is within, there is hardly any point in pushing yourself.