I came up with a really strong setup:
2x Crusaders, 1 Vestal and 1 Jester.
Both Crusades have Smite, Holy lance, heal and stress heal skills.
Vestal has both heals, the stunning skill and that dmg+self heal skill.
The Jester has the Stress heal, party buff and both bleed skills.
Both
Crusaders will be sitting at the front and dealing the damage. Make sure the one with
less speed (Trinkets that trade away speed for crit/hp/damage/whatever are extremely good) is on
first(Front) rank. This way the faster crusader (on rank 2) will get his turn first, and can use the holy lance to snipe down the enemies at the back (usally the ones you want to kill first) the holy lance will also swap the slower crusader to rank 2, so now he can use the holy lance as well
Just remember to check the positions after each battle.
Ofc, when needed use your crusaders to heal up and reduce stress. I usually prolong the easy fights a bit just to heal and take care of the stress, but remember that the stress penalties will kick in if you do it too much.
Vestal will be sitting on the 3rd row, doing her thing: Healing allies and stunning enemies.
The
Jester mostly focuses on buffing and reducing stress on the 4th rank. On boss fights swap him to the 3 rank and spam bleed. Dot effects are really useful there since those fights tend to last long.
Overall this party has 3 heroes with reliable healing skills,
3 heroes with good stress reduction (not to mention you'll be scoring crits with holy lance to further help with stress) and
3 heroes with torch increasing skills.
Holy lance spam also helps repositioning your heroes if you get surprized.
So it is not very uncommon for easier fights to end with my party having full torch, stress <10 and everyone on full hp.
Right now my roster has 6 crusaders
4 Vestals and 4 Jesters, overall roster size is 18 I can have 4 randomers that I can send out to easiest missions with no gold spend on provisions. Week 30+ and I've killed 3 bosses. But I still haven't moved on to the lvl 3 missions. Some of the crusaders have over 20% crit rate on Holy Lance before the Jester even starts to use his buffs