Halo 4's multiplayer offering is to get an injection of nostalgia as fan favourite map Valhalla returns, remade and renamed Ragnarok.

Ragnarok offers pitched battles across a field of jagged rocky outcrops and trickling streams, where the intense Halo gun combat is made even more frenetic by a fleet of vehicles for players to use.

Standing tall amongst the garage is the newly announced Mantis: a bipedal mech, that comes packing chain guns, rocket pods and a devastating stomp.

The destructive power of this towering titan is balanced out by cumbersome movement and a vulnerability to rear attacks.

These latest reveals add to an already bulging multiplayer line-up, which includes brand new co-operative mode Spartan Ops.

Frank O'Connor, Franchise Development Director at Halo's studio 343 Industries, had this to say of Spartan Ops: “It’s episodic, it’s co-operative, it’s a TV show that you play. Each week an episode of the fiction will air and it’s accompanied by five missions that are related to that story.”

With Spartan Ops, 343 hope to provide a meaningful story to go along with the alien eradicating gameplay. You can find out how they got on when Halo 4 launches on November 6th.