Just did with Mage. Permanent stealth is extremelly op, most of the bosses don't really have any aoe to deal with them, or they're too face hungry to bother. Permanent stealth + bag of ice blocks = gg.
So far tried with 5 classes. Failed with 4 (got to final boss once, in one run I got wrecked by the guy that gets 4 15/5s on turn 5, that one is impossible if you're not aggro) now am at the final boss with Mage. First time I've been offered the +1/+1 flag is with this mage run, it's really OP, also got +3 spell damage and Wax Rager. All three of those are really OP, getting a 6/2 every turn is super strong and getting 6 damage with Arcane Missiles is also crazy.
I've won three so far. First was Priest with +spell power passive and a bunch of Holy Novas. Second was Shaman with murlocs, minions get +1/+1, double battlecry, and 9 copies of Tidehunter (LOL most fun dungeon run so far). Third was Druid with Quest and minions can't cost more than 5. For both the Priest run and Druid run I believe I also used the passive enemy minions cost 1 more, a pretty strong passive imo.
Finally beat a run with Mage. (Also first time I got +1/+1 passive) All the bosses were quite easy since I managed to draft an amazing old-school Tempo Mage with Book Wyrms, Apprentices, cheap spells and even a Flamewanker.
Hearthstone Screenshot 12-10-17 11.03.47
Hearthstone Screenshot 12-10-17 11.03.56
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On the third day before Witchwood, Blizzard gave to me,
I just finished incredible run as warlock. I had Sceptre of Summoning and 5 Giants :D also picked Robe which give spell dmg +3 and 3 spellstones. Had Magic Mirror which gave me even more Giants and also, Chromagusses, one game I got Mirror out of Chromagus, so I ended with 3 Chromagusses.
It was stupid that I could overvalue King Togwaggle :D
got it literally 10 minutes ago, went with shamman with 2 thralls and cloack of shadows, and got lucky to go against the darkness, after surviving the early game and banshee scream+twisting neather... his deck was full of removals but he couldnt target my minions c: https://imgur.com/a/SAq9w
I almost finally won! but didn't. Lol. I had a crazy C'thun Druid deck and got the double battlecry treasure. My C'thuns (which I got 3) were going off at 50 damage a pop. So if I got to turn 10, it was over. I got beat by the TRAP ROOM. On turn one, after my first play it dropped 4 3/3 buzzsaws from it's secret Christmas tree. then on it's turn 1 it dropped 2 more 3/3 minions. I was screwed from go.