Just a warning for PS3 users, thank god I backup my data to the cloud. I got a corrupted data message when trying to escape the armory. I died and when trying to climb the stairs and then bam it froze and said corrupted data message.
I just wanted to give a heads up to others to backup there data before playing EP4. Since I have yet to have this issue but got it tonight. At least now I know what to do to finish the level.