Lelouch is killed by Shadow!Mei, but not before being dragged to the bodies of his sisters, and having a Heroic BSOD.
Edgar is stabbed in the back by his own shadow while he tries to protect Kevin. And then Kevin is killed anyway.
Sulu is killed by Dark Kallen, and his body is found by the real Kallen, who seems to have a thing for him.
Kallen then proceeds to kill Dark Sulu, telling him, "Sorry. I get the feeling that Sulu would be pretty pissed if I died right here. So for him, I have to keep going." Could possibly double as a Crowning Moment of Heartwarming.
Molly is killed by the shadow version of Fletcher, a good friend of hers. There are tears.
A good number of characters forgot the names and/or faces of those dearest to them thanks to the school's Laser-Guided Amnesia system. Cue frustration and tears.