apparently i'm using the wrong ones ;_;
usually i've got two tankish people up front (knight/barbarian/man at arms), healer behind them, long-range (lady with daggers, arbalest) behind them. which worked perfectly fine in the easy and medium dungeons, but is getting me worked in the hard ones.
Here are 2 Champion runs I literally just did:
Ruins (Medium): Occulist/Plague Doctor/Grave Robber/Hellion <- Hellion and GR burst down the back row stress dealers, PD either stacks blights on front rows or stuns stress dealers. Never had anyone at risk of dying.
Cove (Long): Occulist/Plague Doctor/Grave Robber/Bounty Hunter <- GR throws daggers at back rows, PD stacks massive blights (sometimes double stuns, like when there are 2 Shaman), BH begins with upper cuts to Pelagic Guardian then just attacks open front row targets. Front 3 rows ALWAYS take a minus bleed chance trinket, to counter Uca Crushers pinches. Came out with minimal stress.
For Warrens, try something like Occulist/Houndmaster/Bounty Hunter/Hellion.
Weald, you
have to take an Occulist, to debuff the Giant's damage, then run a Grave Robber, Highwayman, and Hellion in front.
Easy work