Marathon Man achievement in Halo 3

Marathon Man

Locate and access all Terminals in the Campaign.

Marathon Man0
9 guidesOnline/OfflineSingle PlayerCooperativeCollectable

How to unlock the Marathon Man achievement

  • DiegoTanDiegoTan417,747
    08 May 2010 08 May 2010
    158 11 8
    Guide by Eternal from :
    Note #1: You have to wait for the "Fragment Ends" message to come on before the game registers that you've got the terminal. The only exception is Terminal #2 on the level "The Covenant," this one does not give that message. Hit the A-button to scroll through a few messages, then the terminal will turn red and a few more screens will need to be read before the "Fragment Ends" message appears.

    Note #2: These can be done in any order and you do not have to finish the level. It is suggested to do them all on the same difficulty. Access the terminal, wait for the end message, then you can save and quit the level.

    The Ark:

    1. Start the mission and once you enter the first building take a left into another door and now you should be in a curved corridor. On the inside is a Terminal.
    2. After activating the bridge to let your comrades across the gap, do a 180 and you should see it. *it does not open until you activate the bridge*
    3. In the third building after defeating the scarab, kill the group of sleeping covenent, then follow the corridor downwards. Once you reach a door in front that is locked, immediately on the left there's an open door. Go through and walk straight off, then do a 180 to find a secret room. It is in there.

    The Covenant:

    1. When in the first tower standing on the lift, face the access panel and turn left. Jump over and it's right there.
    2. Land your hornet on the second tower, walk towards the entrance but when you see the locked door, do a 180. Should be right in front of you.
    3. When in the third tower standing on the lift, face the access panel and turn right. Jump over and it's right there.


    1. After reaching the end of the first cave, hug the right wall and you will see a building. Jump up onto the walkway and hang a left once inside. It's right there.

    Guide not helping? View 8 more guides for this achievement.

    Showing most recent comments. View all comments.
    Chelski BlueJust to confirm these have to all be done on the same difficulty. I had all bar the last on legendary, tried getting that on easy, no pop.
    Posted by Chelski Blue on 31 Jan 21 at 20:00
    Lazy with StyleI already got this achievement but when I played with my friends in campaign coop, they couldn't access any terminals? There was no prompt to access it. Why is that?
    Posted by Lazy with Style on 17 Sep 21 at 22:15
    MoltenHellHoundits because you got the terminals already and your friend was player 2 in co-op. if he is player one then the terminals will show if he doesn't have them.
    Posted by MoltenHellHound on 14 Feb at 19:54
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  • Removed Gamer
    Gamer has been removed
    103 17 9
    Watch and Read the Youtube video Description.
    Showing most recent comments. View all comments.
    Markuuusthanks for the video :)
    Posted by Markuuus on 22 Nov 09 at 11:48
    soccer4cmoprefer this video over the list on the other solution
    Posted by soccer4cmo on 04 Mar 10 at 05:33
    TWIGHLIGHT Z0HAthanks for the video.
    Posted by TWIGHLIGHT Z0HA on 15 Nov 12 at 22:09
  • mr cr0w1eymr cr0w1ey13,414
    08 Apr 2009 10 Apr 2009
    55 10 0
    i am giving u the YouTube links that i found
    but if u want me to help u get it so Send a message to " mr cr0w1ey " on XboxLive telling u need help on the terminals at halo3.

    1-3 Terminals are in the ark stage
    4-6 Terminals are in the coven stage
    last Terminal is on the last stage- Halo (easiest terminal)
There are 6 other guides for this achievement
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