no you cant
yes but it is really hard you have to go onto online then choose how many players you want that is how you do it
offline firefight coop surpports online 16 players, system link 16, and 4player split screen.
Unlock Halo 3:ODST's Campaign Complete Achievement. Once you beat the ODST campaign, visit Halo Waypoint on the dashboard to unlock the item.
You get an achievement and if you have halo waypoint, you get the CQB helmet. Well you actually get it on heroic but you get what I'm saying. You also get an attachment if you've completed halo 3 on legendary too. Hope this helps!
No, halo 3 forge is not offline, you may play it online with friends or others.
in the achievement were in for some chop on halo 3 you do not get scout shoulders, sorry
Inheritor.
you need to get 1000+ achievement points from halo 3
To get credits in Halo: Reach with a silver, or offline account, you need to play offline Campaign, Forge mode, or local Custom Games.
you don't.
no you cant
no you don't you can get the achievement on campaign
u play it
No...
get a life loser
You get an achievement