I know thhat you can play anniversay maps on reach, but is it possible to get maps like spire and other maps that can with reach as dlc when playing anniversay?
Unfortunately, no… if your’e playing matchmaking on the Anniversary disc you can only play maps in the Anniversary map pack you can’t play maps from Reach in Anniversary.
No. If you buy Anniversary, you only get the 7 Remastered maps and access to the Anniversary Playlists.
If you already have an existing Halo: Reach copy, go get a Redeem Card for the Halo: Anniversary Map Pack.