Raphael's Final Act on Tactician

My fight with Raphael on Tactician. My main character is a LVL 4 Paladin with Multiclass in (5)Warlock and (3) fighter. Then I have Minthara, She is a LVL 6Paladin with (6) Cleric. Gale is a Level 10 Wizard , (1) Sorcerer and (1) cleric and lastly Shadow heart with 6 levels in Cleric and 6 in wizard.