Halo 5: Guardians announced its October 27, 2015 release date with the release of two live action trailers. Each explores a different side of the story. The first Master Chief as the betrayer of humanity, as Spartan Locke approaches the Master Chief amid ruins to finish him off before setting off on a mission to help save what's left. The second trailer flips things around, this time with Master Chief finishing off Locke before embarking on his own mysterious mission.
We'll find out what all the destruction and killing is all about when Halo 5 releases in October.