For Close Encounters
Get 10 one-hit head-shot kills with the shotgun in the single player Campaign.
1/7/2009
5:00:44 PM
Rare 22.1%
Ace Act 3 and Act 4
Ace Act 3: The Mission and Act 4: The Level Factory
1/5/2009
3:36:18 PM
Ultra Rare 1.1%
Crowd Pleaser
A level you published was played by 50 or more people
12/30/2008
7:13:17 PM
Ultra Rare 2.9%
METAL GEAR SOLID® Booty Master
Collect all of the METAL GEAR SOLID® prize bubbles
12/28/2008
4:07:25 PM
Ultra Rare 1.1%
Look what I made!
A level you published was played by 5 or more people
12/26/2008
6:01:27 PM
Very Rare 7.7%
Diamond Hunter
Destroy the 5 hidden target diamonds in Act 4: The Level Factory
12/26/2008
5:52:09 PM
Ultra Rare 1.4%
Specter Recon
Collect 50 pieces of gray tech in the Cooperative campaign.
12/21/2008
4:32:09 PM
Rare 15.6%