Armor customization (Halo 3)/Elite

From Halopedia, the Halo wiki

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Combat harness |Unlocked by default |Unlocked by default |Unlocked by default |-align="center" |HTMCC H3 Assault Menu Render.png
Assault harness |Unlocked by default |Unlocked by default |Unlocked by default |-align="center" |HTMCC H3 Flight Menu Render.png
Flight harness |Complete the entire Halo 3 campaign on Heroic difficulty or higher (Campaign Complete: Heroic) |Beat Tsavo Highway on Heroic difficulty or higher |Beat The Ark on Heroic difficulty or higher |-align="center" |HTMCC H3 Ascetic Menu Render.png
Ascetic harness |Unlock the Steppin' Razor achievement |Unlock the Up Close and Personal achievement |Unlock the Overkill achievement |-align="center" |HTMCC H3 Commando Menu Render.png
Commando harness |Unlock the Overkill achievement |Unlock the Triple Kill achievement |

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