sorc - teleslut. no nigma so it will be a pain in da ass to go farm mode witout a sorc.
barb - bo leap whore
hdin 1 - basic bitch
hdin 2 - not so basic bitch. he becomes ur aura bitch. will use conviction/salvation/meditation when needed as other hdin has active concentration already. Get those auras from a shoppable scepter or pick one up off the floor unless u want ur friend to waste one of his akara respecs as he wont need those skills later on in the future if he wastes hard points (everyone will branch off later on to solo mf anyway or run their updated Skynet if the recent banwave didn't scare them already)

u could also go with a necro for amp/corpse explode/decrip/lower res support but the 2nd hdin is MUCH better for solvability as that res aura can save u from packed room of souls in hell diff when EVERYONE gonna have complete bat shit gear and HORRI-BAD resistances lol.

Use dim vision: souls now are a joke to kill