From the Trine Game Manual:
Amadeus is an older wizard still "studying" at the Astral Academy. By a series of accidents, he's been left behind in the castle. He can see the undead army approaching and he is keen not to die. He wants to escape and get as far away from the undead as possible.
Usually at Amadeus' age, wizards would have graduated and left, but Amadeus never quite passed the wizarding exam. He's never learned the fireball spell, for example, having always been more interested in wooing the girls and goes to great lengths to pretend that he's a magnificent wizard. Usually it only leads to miserable failure.