All 5 orbs are in the Academy

Go down the stairs to the right in the main room. At the back of the far balcony there's a switch, use that and then go down to the bottom and use the other one. Kill the talkative undead guy and in the chest that spawns is a helmet, using it not only causes slight motion sickness but also reveals things like switches and platforms etc that'll help with the other orbs. smile