On higher difficulties, the first auditorium is a criticial point. Especially on titan mode, it is nearly impossible to pass this point unless the blades of athena and either Cronos' Rage or Atlas Quake are fully leveled up. This means that all Gorgon Eyes and Phoenix Feathers must have been found beforehand as well.
First, you cannot harm the translator directly yourself, so don't worry about splash damage. Second, avoid grab attacks; they leave the translator unprotected, and he is often hurt by your enemies' flying bodies.
Third, use magic liberally in the central chamber, since the summoners there replenish your mana. Finally, when the wild dogs stop spawning, you can draw the enemies to the rear of the auditorium, away from the translator.