I've been trying to clear this map on hard, and I could use some help. My units are the following:
5-Stars: Peri, Catria, MCorrin, Kagero, Setsuna, Lachesis
4-Stars: Marth, Sheena, Merric, Palla, Chrom, Cain, Donnel, Maria
Chrom is level 1, Maria's 10, everyone else is between 20 and 29.
I also have a 3-Star Olivia at level 1 (though I'd rather not train her or Chrom up at the moment if I can help it, not much time left).
I do not know anyone's boons or banes.
What team and strat should I use?