This game sometimes :P I almost completed grift 82 on my Necro, all went fine all the way the first floor. Really big floor, high density, enough elites/rares, good layout. Had no deaths and was a minute or two ahead of the timer. So far so good.
I was at about 75% of the bar before I zoned into floor 2 so was feeling pretty confident, and right outside the portal where TWO Juggernaut champions and a horde champion. All with spearmen, hell witches, corrosive, teleporting adds, laserbeams, reflect damage and fucking chargers. GG. What a jawdropping mess that was. And literally on top of the floor portal.
I couldn't pass that ball of death either because further down where tons and tons of spearmen, reapers and hell witches just oneshotting me all the time. I tried running past but the (otherwise perfect) density was so high I couldn't do anything. Sometimes it's frustrating that all goes so well and then to get zoned into a new floor with all the stuff of nightmares you can imagine and you know you have zero chance of surviving. The dps I do for said 82 is okayish, but any projectile or charge is pretty much certain death :P Back to farming upgrades!