I used to do things in HW with H/H no consumables that I can't do now due to nerf of skills that I used or boost to skills that monsters uses.
I did every dungeons in HW with H/H no consumables at a time or another, including Forgewright.
I am a warrior and for these I used Ursan (still only one ursan in the party since it's H/H).
Now that it is nerfed here is the dungeons I can no longer HW H/H no cons :
Vloxen Excavation (I did it without Ursan but I used the pre-nerf ROJ so now I can't do it)
Shards of Orr
Any of the Slaver's exhile dunjeons
Ragarr's Menagerie
As for the missions, I am still able to do all of prophecie campaign easily, all of Factions except Eternal Grove and maybe the first cathan mainland mission (I used to do it before with only henches to the other side but last time I tried it looks like the spirit buff is too much for the hench group). For the nightfall campaign, the only one I didn't do is Dzagonnur Bastion, but I think I could do it because last time I did it with a pug we used a strategy that didn't require to split the party, so I could probably H/H it.
Aside from that, I never been able to do tombs of the primeval king in HM but I only tried it twice.
I also managed to do the last Sorrow's Furnace mission (the one with the big golems and flame djinns) in HM but it was pretty hard
