So, I'll make it quick. I was playing Skyrim and decided to finally continue on quests properly, so I got around to doing Revealing the Unseen. Everything went well until I got to the accademy; there things began to go wrong. The barrier was broken, the explosion happened, I was asked to find the archmage, found the corpse... But no one there. And if I open the quests in the pause menu, it still says I need to finish RtU (even if I got the achievement for completing it, too) and there isn't anything about Containment.
From what I read, my first mistake could've been kill Paratus (or all my companions at the accademy so many months ago that I don't even remember why I did so). Then, I also arrived alongside a follower and a permanent undead summon. Sadly, I've gotten the habit of deleting older saves so I only have the one from the beginning of the game and the most recent one. At that point the oldest save was when the barrier had been broken. I tried several times, even died from my undead minion when I tried to kill it (and he decided I should be frosted to death); in the end I told goodbye to my follower and she said she'd be going home, but she lied! Suddenly she began fighting the archmage and Mirabelle, then the explosion happened after she was knocked uncounscious (when they go on their knees and pant) as Savos had approached Ancano... Then Mirabelle resumed the fight as if nothing without asking me if I was okay or anything, with my follower stuck inside of the new barrier. Going outside, the corpse was there but no one mourning; heck, they even walked right INSIDE of him. Then another ancient dragon came by to try and have a bite out of me, but failed to do so.
I tried to speak to Tolfdir but he simply asked me (AGAIN) to find his lost tool, which I found in the same place. Completing that "quest", I tried to speak again but nothing to make the quest go on. So, I'm not stuck. Anyone knows how this could be solved? Sadly Xbox 360 has no console or anything.