Build please?
Max warp. Max throw.
That's pretty much it. Warp something then blow it up with throw. Atlas mechs, brutes, primes and banshees become allies. If I go tech armor I use a high level sniper rifle. I don't really like tech armor so I tend to pistol/smg.
I finally found a semi-decent use for an smg. Cryo rounds III + throw. A couple of Hornet sprays can freeze a crowd.
The challenge weekend stuff is great. I really like this multiplayer mode. It makes me hate the current ME3 ending even more :\
Last game I played I random difficultied™ into a bronze match. Host left and it migrated to me. I upped the difficulty to silver. Lots of deaths in the first round and one person left. By the 10th wave the team was a machine. I was laughing at how much the team improved in one match. Phantoms were focused, objectives were met and revives were had all around. Those low-level characters gained a lot of credits and XP. They readied up immediately for the next match, but I had to go.
After helping them get through silver I finally got a Widow for that Infiltrator. I'm going to start hosting bronze and increasing the difficulty right before the match starts more often.
I really like the cloak on Geth Hunters. I've played a lot of games with cloak, but GH have just the right mixture of cues. Finding them doesn't feel too easy or too hard.
*Builds. Almost any build can be made to work. Even imperfect builds can work on Gold with enough skill. The key to any build is just to be using something you can have fun with. I got tired of using pistols for a while and my Drell Adept carried an Incisor. I was still effective on Silver and gold.
*Reading through the N7 weekend stuff. I'd really like to use my N7 Valiant in multiplayer mode. I just know I'll be stuck with a hurricane or crusader.