Check out Polynoid's beautiful VFX work for Halo 4: Forward Unto Dawn's opening.
Szymon Biernacki's Concept Art for Halo 4: Spartan Ops
Here's some of the concept art work created by Szymon Biernacki for Halo 4: Spartan Ops.
Halo 4: Forward Unto Dawn - Part 4
The action ramps up in episode 4 of Halo 4: Forward Unto Dawn.
Halo 4 Trailer VFX Breakdowns by Method Studios
Method Studios do VFX breakdowns of several scenes from their recent cinematic trailer for Halo 4.