Halo 3: ODST

3,438 (2%)
20-25 h
Halo 3: ODST

ONI Alpha Site achievement in Halo MCC

ONI Alpha Site

H3: ODST: Complete ONI Alpha Site.

ONI Alpha Site0
1 guideOnline/OfflineSingle PlayerCooperativeMain Storyline

How to unlock the ONI Alpha Site achievement

  • CyberPunch83CyberPunch83467,860 467,860 GamerScore
    03 May 2018 16 May 2018
    3 1 0
    Story related and cannot be missed. This mission is triggered from the satchel charge detonator scrap found in Mombasa Streets.
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