Got guardian, windwalker and fury. I tried both outlaw and subtlety, oddly enough was having more luck with subtlety, but I didn’t think to try sub until yesterday night, and I’ve been running on no sleep so, bye bye for now.
I think I’d like to try for the book, in which case I’ll probably have to prep for sub, frost mage, demolock and hpal (I never beat the healer challenge in Legion, so thats gonna be the hard part)
I didn’t get to beat any of them but did finish the first stage of holy on paladin so that is a good step in the right direction. Oh I died in stage two because I was focused on why my party members were leaving the group lol.
That’s the big take away really. It showed there’s saliency for this kind of content. Something that’s completely free from player power, completely optional, and challenging.
Knocked out the boomkin and resto Druid challenge then started working on the Guardian challenge. Hated the boomkin challenge and only mildly enjoyed the resto challenge and realized I wasn’t going to enjoy or have fun on the Guardian challenge due to the tuning so just stopped. Ultimately realized I wasn’t having fun anymore so I stopped. Sadly that can be said for the whole of WoW for me these days so I’ve unsubbed for the time being. 9 days left!
Finished the Guardian one. Tried a few others but didn’t have the same drive to finish them. I think the Guardian one burned me out.
Got through resto sham, ret pally, ele sham, vengeance dh, and ww monk.
Really wish this was open until 9.2 so there’s something to do. Guess i’ll level an arms warr so i finish my book in march.
Just Disc Priest, since it’s my main, worked on Guardian Druid a bit, but I wasn’t into it, probably get it next time. No hurry 
Got my mage, paladin and furry warrior done. I’m too out of practice or clueless how the specs work to have done any priest, lock or monk I was hoping to try as well.
I wish they kept this thing up tell 10.0 since this expansion is so empty of new content. The initial release during the Holiday season with only Two weeks uptime seemed like a real bad idea.
Warlock ones cause I hate alts and warlocks are the best class.
All 36 of them. I honestly wish Blizzard would put challenges into every expansion. They had a theme going on with MoP/WoD with challenge modes and scratched that into M+ but then gave us mage tower. I think they tried to replicate mage towers with Visions/Torghast but it’s really not the same thing.
In order
Affliction
Guardian
Holy Pally
BM Hunter
Ele Shaman
Frost DK
Ret Pally
Ret, Frost, and Guardian were the hardest for me. I don’t play Ret or Frost, so I had some learning to do. Guardian was just hard to be hard. BM was probably easiest for me.
Guardian Drood, only one i cared.
Find funny that too many people cry about it when it was more that doable, i guess baddies gonna stay bad.
Sounds like someone was also triggered but by words.
Frost mage. Only tried it because it looked super easy.
Beat the only one that mattered 8)
I beat none! 0
Nada
I didn’t even try it the first time either.
Guess it wasn’t meant for me to do 
0, waiting for nerfs 
The felbear was the only thing I really cared about getting.
Disc priest, frost mage, guardian druid, demo lock, holy paladin, fury and arms warrior, bm hunter.
BM Hunter was stupid easy