I am not able to play the mammoth level because it is not loading the part where I have to leave the mammoth and go fight in the rocks. It is right after I go up in the phantom and blow it up from the inside. I get back on the mammoth and it starts driving, then I get past where an invisible wall just was and we keep rolling along, but then past the bend nothing is loaded and the mammoth just keeps driving. Cortana freaks out a bit and explains what it means for her to go rampent, then it says the terrain is too rough and wants me to get out of the mammoth and go into where the rocks would be. At this point the only texture loaded in is the electricity from the mammoth’s rail gun. If I jump off where the mammoth should be I fall and die and when I used my jetpack to fly to the waypoint it froze when I reached it. I am trying to do the solo legendary achievement so trying on someone elses game will not help. Any help would be great.