Halo 5: Guardians doesn’t launch until October 27, but you don’t have to wait that long to get an in-depth look at the game’s campaign. We recently played through some of the sci-fi shooter’s early missions. Check out the video below to watch GameSpot editors Mike Mahardy and Rob Handlery do battle in the sci-fi blockbuster. Of course, this video is replete with spoilers, so steer clear if you’re hoping to go in clean.

Among other things, this overview video provides a good look the Halo 5’s new four-player co-op, the open-ended mission structure, and the new smartlink weapon aiming option.

The Halo 5 release date is set for October 27 exclusively for Xbox One. In other recent news about the game, 343 has announced its launch day multiplayer playlists and revealed all the achievements. In addition, the game is now available to pre-load, while Nathan Fillion likes the way he looks in it.

What stands out most to you form this video? Let us know in the comments below.