What I found here that worked was basically to just disable one Clapperclaw every turn with MaA (I had Rampart Shield so it made for guaranteed stuns) or DoT it up when low on HP so that at the beginning of each turn I would only get one of them to attack me.

Team was buffed and no stress prior to the fight and ended up winning with no resolve checks. Recently I beat a Shambler in a NG+ level 3 dungeon with MaA, HM, Vestal and Antiquarian. Remove his Prot with HM, double/triple Riposte and watch the fireworks.Ībsolutely no way I would ever attempt him on Champion with an NG+ party. Something like Ves/HM/HWM/HWM or even HM/HWM/HWM/HWM would own him pretty badly I think. This party actually ran into two Shambler altars in this mission (never seen that before), but I had too much stress when I found the second one so I chickened out. MaA and HWM are both very good on him with Riposte, since Shambler always does AoE attacks against the party, so you can Riposte him every turn. Used mass AoE spam to clear them out fairly quickly.

Lep/Crus just use Hew/Zealous to kill the minions and get an odd hit on Shambler, Antiquarian blighted him every turn, and Vestal healed/attacked as needed.

Not really an ideal Shambler party at all, but works okay if the shuffle isn't too bad. First party was something like Ant/Ves/Lep/Crus. Both times on Apprentice level dungeons with level 2 heroes with 3/3/3. I've beaten him twice on my new NG+ plus save.

Darkest dungeon how to hunt shambler