10? You are a brave man...I salute you
I have some MP conundrums to let the smarter people solve, plus some observations. These are all based in the simple "how to kill/deal with" realm.
1) The best method to lob grenades? I usually use them check out what's around...like throwing dynamite in a river

That said, I figured out yesterday that plasma grenades are much more effective at killing people. No bouncing, and they stick if you nail it right. Any ideas on better utilizing grenades?
2) When the "one guy" gets the sword (the one who goes right to it, and then starts knocking everyone off), how do you deal with him? In short, what methods work for dealing with Sword users? In close, of course. they can close frightening distance with the insta-killer lunge. I plan on using the plasma grenade, but I'll still be dead.
3) Is melee as effective as it seems? I've only done it with the bomb and flag, and it's quite deadly. Is normal melee that effective? Should I try to brain people I'm chasing before I shoot?
4) Anyone having any luck with the Battle Rifle? Up close, it doesn't pump enough bullets. Far away, it takes too many shots to kill (as opposed to a sniper rifle).
Observation: I've been a definite "body mass" shooter

I'm going to try and hone going for the head (which admittedly is easier when you aren't circling each other).
Take care,
Chuck