no, just as arbitor and master chief.
Get Xbox Live on your account then in Halo Reach click "Matchmaking" from the Main Menu.
Matchmaking, Custom Games and forge. CTF, Slayer, BTB, FFA, Territories all the halo reach ones as the multiplayer is built on halo reach
on the home page go to main menu then go down one to matchmaking.
Yes, Matchmaking (You Need Xbox Live Gold), I Suggest Big Team Battle.
When you boot up Halo 3 go to the main menu, then choose matchmaking, but make sure you have Xbox Live connection, and there you have it, online multiplayer.
If you install it onto your harddrive and insert the original halo 3 disk you can access the three extra maps and the matchmaking features.
A maximum of 16 players on Multiplayer Matchmaking in the Big Team Battle Playlist
halo 3 odst, unlike halo 3, has no matchmaking, sorry
avenge a teammates death in multiplayer matchmaking. [kill the person that killed your friend in a local game]
Yes, but you will not be able to use matchmaking.
no but there might be mods where you might be able too maybe halo reach will let you
No. ODST doesn't have multiplayer, excluding firefight (which can't be forged, and not even for matchmaking) and co-op campaign. But ODST does come with a Halo 3 multiplayer disc, which includes all of the original multiplayer maps and the DLC maps. That disc also includes forge mode.