Going Flawless in the first Y1 Trials on Burning Shrine. So many times where I should've died in 1v3's and instead made fools out of the opposing teams.
My favorite part was when I Warlock melee'd a dude half a second before taking a near point blank Gjallahorn and surviving, then shooting him down, then turning and getting a 2 for 1 kill with my trusty Praetorian Foil. Good times :]