Ragnarok is the return of the Halo 3 map Valhalla. There are surely some minor alterations to the map itself but it has remained largely intact. There are two bases on the map and each one has the two returning Man Cannons. The waterfall, large rocks, and caves as well as the human turrets all make a return. Players will continue to fight over the high ground in the middle though it is not known if the main power weapon will still be the Spartan Laser or one of the newer weapons introduced in Halo 4.
The biggest new addition appears to be the Mantis Mech seems to be useable on the map.
