Mineboom if you can save the archer for last once his hp is low cause a unending rain of arrows(knocking out one of his friends might do it too not sure on that yet) and he knows how to kite like a pro Dryad(ether one) and Lamia(support) are the best at getting him.
Imp(attack) is really good at taking down anyone if she isn't distracted by someone else, once you get rid of the priest she's almost unstoppable I'd suggest Incarnation or Dark Shield as I've yet to get her to use Kink Curse properly on this stage have yet to test her other move.
Lamia(attack) is can handle anyone other then the archer well and can tank like a boss. have not tested with love hug.
Lamia(support) Charm Eye and Poison Swamp seem to would well here but the rest of her moves are untested.
Dryad(defense) can take on anyone one on one and win but only one on one. her vines are effective at tying up the archer.
Dryad(support) same as Dryad(defense) recommended skill is Earth Seed or Nurturing depending on team set up.
Apprentices can work well on this stage too but once the arrow rain starts their not as useful that said back to back activation of Pure White Illusion and Pure White Mirage is a effective combo if you have it.
Slime(attack) clones aren't that useful on this one so best use a different skill if you plan on using her, I've yet to test her mini-me attack though.
how well Succubus, Harpy and Lesser Succubus do depends on the rest of your party setup.
Imp(defense) almost useless here, that said if her "finish" if uninterrupted she can quickly take out the archer, but that'd take luck to pull off
note this was all tested on hard with no items untested on crazy.