The Key achievement in Halo 3

The Key

Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary.

The Key0
1 guideOnline/OfflineSingle PlayerCooperativeMain StorylineDifficulty Specific

How to unlock the The Key achievement

  • SpectreSubZeroSpectreSubZero358,716
    26 Mar 2009 01 Jun 2009 01 Jun 2009
    47 0 3
    Alright for all of you playing on Legendary here it is.

    I just finished Cortana on Legendary singleplayer. The easiest way to do this is to use the numerous cloaking devises laying around and needlers/energy swords to fly through the level. I just complete the level in 45 min. It was actually I think a really short level...

    Main thing, is keep on the move, if you stop, your done for. The best weapon for those Flood Snipers, what ever you want to call them, is the needler.

    Just remember like any level, when playing on Legendary, don't try killing everything, just try to do what you can to make it from checkpoint to checkpoint!
    Showing all 3 comments. Leave a comment.
    Smoothie101902I just started this mission last night on Heoric, and it is a pain in my balls. Thanks for the weapon reccomendations!
    Posted by Smoothie101902 on 29 Sep 10 at 09:40
    Keger1O1uh ok
    Posted by Keger1O1 on 19 Mar 11 at 15:38
    Posted on 14 Nov 13 at 07:46
  • Have you got any tips or tricks to unlock this achievement?
    Add a guide to share them with the community.

    Sign in and add a guide
Do you have a question about this achievement? Please post it in the Halo 3 Forum