I've said this twice in this thread and I'll say it a third time. If Misery did die, it was definitely not by being crushed in the Black Space. When you defeat the Undead Core, it transitions to the helicopter with Itoh and Momorin about to leave, and it then transitions back to you and Sue in the Black Space. Regardless of which ending you're going for, Misery is no longer there. So we know as a fact that Misery did not die in the Black Space. How she disappeared is unclear obviously, but I'd bet that she woke up and left the scene. What ever killed Misery, it wasn't getting crushed in the Black Space.
Well... IF Misery did die, then by precedent, she would disappear. When Toroko dies, she falls over and then goes off in a puff of smoke. When King dies, he smokes away. When Booster dies, I believe he poofs too.
So, I would think it's possible during the undead core explosion she could poof too. I hate it when people poof ;_;
If that thinking is correct, Igor probably didn't die. Curly doesn't die either if you leave her. (Though, maybe it's because her fate would be like that of the Killer Robot that wakes up before exploding)
However, I never left Misery alone during the Undead Core battle, to see exactly what happens, if it shows anything at all, in that last split second. So... I could see it either way. She should be able to get away no problem. Though if PIXEL says Misery died for some reason (maybe she was alive until he said that). BAD!
I think he's just toying with us
A : "I love Misery! She's a great character!"
Pixel : Thank you. She died.
A : .......................
(As for her not being crushed in that room. Well, you could go with game law. Only what needs to be seen is shown. It was a completely black room, there is undoubtably SOMETHING for walls, and debris everywhere from the battle... although we just see a big black space. Ah well... I dunno.)