Impossible fight

During the one and only encounter : the mage (NPC lev 5)never use his spell but only attack with a staff. The paladin (NPC lev 10) attacks only once per turn, possesses 0 magical item. Monsters do splash damage to all team for a damage amount > regen. I calculated 28/14 (if saving throw succeeded) damage per round when the team has only 2 healing potion each. I was rogue lev 4, so 31hp. The initiation combat sequence let 0 chance to win the fight and the combat system break as soon as you start to correct Franz errors, like monsters moving across the map without applying opportunities attacks. A very bad experience, and it is the second time I live that : total wipe out of the team.