Yep.
It comes with it, but if you have all the old map packs it may not be worth it.
halo 3 ODST will probably come with a second disc with all the Halo 3 Online maps on it (all 21) plus 3 more. will be halo 3 format.
All of the maps, including The Mythic map pack 1 and 2, come on the Halo 3: Mythic disk that is included with ODST. If you don't want to buy ODST, I believe that the full Mythic maps are available on Xbox Live marketplace.
The Halo Odst Disk 2 comes with all maps (Plus 3 extra), and the ordinary halo 3 disk comes with no added map packs, so you don't have another 12 maps.
No, the Halo 3 game disk has both the campaign and multiplayer mode on it. What might seen confusing is in Halo: ODST, the game comes with two disks. One disk is for the Halo: ODST game and the second disk is for the Halo 3 multiplayer with all the latest map packs on it such as Mythic
all of the odst make it out of the city with an enginieer.
Here is a complete list of all Halo 3: ODST achievements: http://www.xbox360achievements.org/game/halo-3-odst/achievements/For tutorials/guides on how to do them, simply put the names (i.e. "All Ears," "I Like Fire.) into YouTube along with the keywords "Halo," "ODST" and "guide", and you should be good.
No, It does not. Halo ODST is the story of a squad in New Mombasa before/during the events of Halo 3
du bist ein scheibkerl
Well Halo 3 has a great but short campaign and online has the default maps. ODST has a short but not to great campaign but comes with a disc that is made for solely Halo 3 online with all the maps. So if you like a better single player experience than get Halo 3 but if you want a better online system then get ODST. My personal opinion is try to get both or if you cant get Halo 3 first then ODST. Note: Don't forget you can also download the map packs but you will need a lot of space on your Harddrive and quite a few Microsoft Points.
no, all there is not any flood in halo 3 odst firefight
Halo 3, Halo wars, Halo 3:ODST and Halo:Reach