I am currently playing Halo 4 on Legendary trying to get the Achievement “Lone Wolf Legend” & it, of course, glitches the Lich never explodes & map doesn’t load I have restarted the level 6 TIMES along with my Xbox & same damn problem happens if I start from Bravo Checkpoint it doesn’t give me the credit for beating it on Legendary is 343 going to ever start listening to the fans of Halo & fix these glitches or are we going to have to get lucky & hope the game doesn’t glitch??!! Bungie did an Extraordinary job at listening to the Fans 343 could learn a thing or two from them. PLEASE FIX YOUR GAMES!!!
I had this happen to me on the MCC. What you have to do is not glitch through the energy wall. Do not jump off the lich until the game tells you to.