Can't continue Halo 4 campaign (No Textures)

Up to the reclaimer mission (the one with the mammoth) and there are no textures at all, happens even after a restart.

Here are some images of the problem:

I can’t walk around either, I fall out of the sky sphere.
Yep, so any help on that would be great!

Did u ever get an answer I having the same
problem

This happened to me months ago as well. Either restart the mission or save/quit.

This happened to me around the time the game came out. Start a different Halo 4 mission, to erase your progress on Reclaimer, then simply restart Reclaimer.