How come i dont have the halo 3 maps?

[Jeff D]

I downloaded every map pack that you can. I downloaded the mythic map pack and i don't have the maps. i cant do some of the achievements. one of them has to do with longshore or w/e and citadell. i can't find them maps even though i downloaded everything.

 

[Simon J]

You cant get those yet, it gave you 3 of the maps if im correct, The rest will be realeased september 22nd odds are, with halo odst.

 

[rawrchan]

the maps longshore and citadel aren't out yet, they come with Halo 3 ODST