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Looking for information on specific Xbox 360 Achievements?
Click on the alpha/numeric bar to search by letter & number, or simply type part
of the game title you're looking for into the search box shown below and hit the search button.
You can also browse all of our achievements via game genre/category.
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| Omega Five
Developer: Natsume
Publisher: Hudson Entertainment
Category: Xbox Live Arcade
Achievements Available: 12
Add To: My Games | My Wishlist | Now Playing | Jan 09, 2008 | | |
| Omerta - City of Gangsters
Developer: Kalypso
Publisher: Kalypso Media
Category: Simulation
Achievements Available: 50
Add To: My Games | My Wishlist | Now Playing | Feb 05, 2013 (US) | | |
| Onechanbara: Bikini Samurai Squad
Developer: Tamsoft
Publisher: D3Publisher
Category: Action
Achievements Available: 27
Add To: My Games | My Wishlist | Now Playing | Feb 10, 2009 | | |
| Open Season
Developer: Ubisoft Entertainment
Publisher: Ubisoft Entertainment
Category: Platform
Achievements Available: 46
Add To: My Games | My Wishlist | Now Playing | Sep 19, 2006 | | |
| Operation Darkness
Developer: Sucess Corporation
Publisher: Atlus
Category: RPG
Achievements Available: 28
Add To: My Games | My Wishlist | Now Playing | Jun 24, 2008 | | |
| Operation Flashpoint: Dragon Rising
Developer: Codemasters
Publisher: Codemasters
Category: Action/Shooter
Achievements Available: 36
Add To: My Games | My Wishlist | Now Playing | Oct 6, 2009 | | |
| Operation Flashpoint: Red River
Developer: Codemasters
Publisher: Codemasters
Category: First Person Shooter/Modern
Achievements Available: 50
Add To: My Games | My Wishlist | Now Playing | Jun 7, 2011 (US) | | |
| Orcs Must Die!
Developer: Robot Entertainment
Publisher: Xbox LIVE Arcade
Category: Xbox Live Arcade
Achievements Available: 12
Add To: My Games | My Wishlist | Now Playing | Oct 5, 2011 | | |
 
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| Otomedius Excellent (JP)
Developer: Konami
Publisher: Konami
Category: Shoot-Em-Up
Achievements Available: 40
Add To: My Games | My Wishlist | Now Playing | Apr 21, 2011 (JP) | | |
| Outland
Developer: Housemarque
Publisher: Ubisoft Entertainment
Category: Xbox Live Arcade
Achievements Available: 12
Add To: My Games | My Wishlist | Now Playing | Apr 27, 2011 (US) | | |
| Outpost Kaloki X
Developer: NinjaBee
Publisher: NinjaBee
Category: Xbox Live Arcade
Achievements Available: 12
Add To: My Games | My Wishlist | Now Playing | Nov 22, 2006 | | |
| OutRun
Developer: Sega
Publisher: Sega
Category: Xbox Live Arcade
Achievements Available: 12
Add To: My Games | My Wishlist | Now Playing | Apr 15, 2009 | | |
| Over G Fighters
Developer: Taito Corporation
Publisher: Ubisoft Entertainment
Category: Flying
Achievements Available: 38
Add To: My Games | My Wishlist | Now Playing | Jun 27, 2006 | | |
| Overlord
Developer: Triumph Studios
Publisher: Codemasters Online
Category: Action/Adventure
Achievements Available: 54
Add To: My Games | My Wishlist | Now Playing | Jun 26, 2007 | | |
| Overlord II
Developer: Triumph Studios
Publisher: Codemasters Online
Category: Action/Adventure
Achievements Available: 49
Add To: My Games | My Wishlist | Now Playing | June 23, 2009 | | | | | Displaying 15 of 15 matches for the letter 'O' |
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  | Xbox 360 Achievements, Guides & Comments
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| Xbox 360 Achievements, Guides & Comments
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