Just make a normal forge map then seclet juggernaut
Go to forge and make a map and then you go to the menu and slecte add map in halo Reach
if you are saying how do you make your own world in halo reach, use forge mode to make a map.
you can't make a firefight map using forge, only mutiplayer
i am VERY sorry to inform you of this, but you cant. in halo 3, halo reach, and halo 3: complete multiplayer experience you can.
You cannot make your own maps in Halo: ODST, it doesn't contain forge world. Halo 3, Halo: Reach and Halo 4 all contain forge world.
maybe
You can download Anniversary Maps to Halo: Reach but not to Anniversary.
there is already one on forge world done for you.
YES! Halo reach has a "Forge" feature, which allows players to create maps, the reccomended map is forge world.
on halo reach you go to main menu and select forge and then select your map there start building your own map and i recommend forge world
The Halo Reach Beta will include four maps. You can read about them here.
that does not exist