Was pugging as my Legionnaire last night for the Weekend Challenge and I dropped into a match with a high-level Katari, a mid-level Hunter, and a mid-level Keeper.
They were already in the match, so I readied up and loaded in. Turned out to be the Tevinter Ruin vs. Venatori on zone 3, both the Keeper and Hunter already in the Fade and the Katari soon to follow suit at the end of the zone. Mopped up the last of the Vanatori (handful of archers) before opening the door and leading everyone back to the last treasure room they missed. Of course, it ended up being a Revenant.
After that, I proceeded to draw most of the aggro through zone 4 (proceeded to get yet another Revenant) before we got to the last zone. I downed a Fire Resistance Tonic and went out to draw 75% of the aggro while the rest of the group handled whatever didn't aggro on me. Pretty sure that if I wasn't drawing the majority of the aggro, they would've wiped pretty quickly. The Hunter ended up in the Fade by the end of the match.
Got back into the lobby screen and the Keeper decided to leave and I leveled up, so I grabbed the Flow of Battle passive. We all readied up and loaded into the match, turned out to be Red Templars. We got about halfway through the first zone before a Necromancer dropped in. Minimal issues, though we did get a couple of Arcane Horrors and Revenants.
We got to the last zone and I started drawing aggro (well, as much as I could with all the enemies spread out as they were), The Necromancer dropped first, but I managed to pick them back up before realizing that the Katari and Hunter were down too. There were simply too many enemies around for me to risk picking them up, so I used War Cry and tried to draw them away from the Necromancer as they went for the revive, which turned out to be suicidal for them despite my attempt to draw the Red Templars away. Ended up having literally everything on top of me and thanks to the Flow of Battle passive, I was able to use Walking Fortress pretty much immediately after it wore off. Since I had archers, Knights, and Horrors all taking potshots at me while the RTC and mooks were hacking away, I didn't have much issues keeping my Guard up, though there were a couple times I was caught with Walking Fortress on cooldown. Had to use a health potion eventually, though I mostly just spammed War Cry, Payback Strike, and Walking Fortress with occasional uses of Shield Wall when necessary.
Once the RTC was down, all I had left to deal with were a bunch of mooks, archers, a few Horrors, and a Knight, which I easily took out.
TL;DR: #CLUTCHED