I was doing crypts in act1 actually, you know the 3 crypts. One is the "right" one for the quest, one is a dud and one has a guaranteed event, either Matriarch Bones or Jar of Souls, which give good xp/money and like a big chest of loot. Run them on T6 storymode, mostly skip all the trash but do open the "chests" things. I did it for a while with WD and got shit though, but I do it like 3 times as fast with DH so there's that. Just equip danetta and spam vault all the way, takes like 30secs to check one crypt. Better with 2 people so you can check 2 at the same time.
Other run we were doing yesterday once crypts stopped dropping was core of arreat+tower of the damned, monk friend was doing the core run since it's shorter, just run and open all the things, checkpoint is at azmodan on story mode, tower of the damned isn't worth it to run alone but if you're in a group no point in having 2 ppl in the core so I was doing that instead, it's 3 chests per run but you have to go all around the fucking place, takes a while if you're not vaulting.
The crypt one is better imo because of the guaranteed gold and xp, I gain paragon levels like every 30-40mins or something and I made like 20millions gold running it for a few hours(it's 120k gold for jar of souls, 160k for matriarch, plus the rares I sell and the stacks of gold I sometimes run over which in T6 often are like 5k-7k big).
Oh and I did crypt on WD Ao-, it's pretty easy even though my WD was fresh 70 almost, like 3.5millions toughness, run all defensive passives obviously, zombie dogs with life on hit rune(and paragon points in life on hit), spirit walk jaunt obviously, I use horrify with speed rune too, then piranado and zombie wall taunt to control shit and spiritwhatever(the blue nuke thing) manitou rune, it breaks shit as you run by even though half the time it attacks mobs instead but it's something unless you have firewalkers. Also enchantress bitch with all the CC shit and the slowing armor, that's quite useful.