This page contains Halo 3: ODST Unlockables for Xbox 360 called "Cidmaster achievements" and has been posted or updated on Sep 19, 2009 by game chicken.
- Developer: Bungie Software
- Publisher: Microsoft Game Studios
- Genre: Action Shooter First-Person
- Release: Sep 22, 2009
- ESRB: Mature
Deja Vu- you complete Coastal Highway on 4-player Legendary Live co-op, with Iron skull activated, and not using the Warthog or Scorpion at all. It is worth 25 points.
Endure-it is unlocked when you play on Firefight, on any mission, and pass the 4th set (the 12th round and 60th wave) on 4 player Heroic co-op Live. It is worth 25 points.
Please submit a problem for any incomplete, non-working or fake cheat listed above.
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