Does Halo 1 have co-op campaign? How do you play Halo CE co-op campaign? According to 343, it takes inspiration from Blood Gulch and its Halo 3 spiritual successor Valhalla, but is its own standalone map.
The first is Basin, a Big Team Battle map built on Alpine by 343 Industries. Halo 5: Guardians features three versions of Blood Gulch, all of them Forge maps. Structurally, it is reminiscent of Blood Gulch from Halo: Combat Evolved.
Valhalla is a multiplayer map in Halo 3 and Halo Online, known as Riverworld in the latter.