you cant. if u make a simple mod with just tanks and ghosts they can see it OR YOU CAN download some hacks for it at http://hl.cursayer.com/
X-Box live.
There are no CPU players for multiplayer in Halo Reach.
Yes, Halo Wars is a Xbox Live game, therefore you can play online against other players.
2 or more players it has multiplayer option
There is multiplayer in halo 4
I think so, you just have more multiplayer maps and games, and you have all the levels instead of the first one.
A maximum of 16 players on Multiplayer Matchmaking in the Big Team Battle Playlist
Halo Trial is a PC Download which enables you to compete against other players around the world and also gives you one level called 'The Silent Cartographer'. Basically it's a small taste of Halo Combat Evolved, which contains the full game.
multiplayer achievements and skulls
If you mean the Multiplayer disk that came with ODST then yes, but if you mean the ODST campaign disk then no.
It is when you destroy a vehicle with 3 or more players in it on campaign or ranked multiplayer
No unfortunately but at least it makes it fair for the spartan players