Halo 3 Legendary Question?

[Grae]

I beat Halo 3 on Legendary with my friend on Co-op, but I didn't finish Heroic before, so I got the Heroic Achievement. If I beat the last level I played, will I get the Legendary Achievement? Or will I have to start over again?
The last level I played was Cortana (The one where the only enemies are the flood).

 

[evan]

hmmmm........ try going into the campaign screen and at the point where you select the level you want to play, there will be two boxes (I think it's to the right) check to make sure that at leased one of those boxes have the heroic symbol in them. With ones that don't you'll have to play them again on legendary.

 

[Man]

Nope im almost positive you just have to beat the remaing levels in legendary...