Gate of Riovanes Castle
Enemies: 3 knights, 3 archers, 1 hell knight (Malak) Guests: Rafa
This should be easy if you've got Ninjas, just wail on the knights, then get the archers. Don't bother with Malak unless he's in the way. If Rafa gets wounded, she'll teleport away, Malak will follow. Agrias and Mustadio are a big help as always.