Tip of the Iceberg
Use your Eagle Vision to scan a Glyph in the environment.
9/6/2010
9:04:29 AM
Common 67.8%
High Dive
Perform a Leap of Faith from the Top of Florence's Giotto's Campanile.
9/4/2010
9:54:41 PM
Common 50.9%
Buckin' Awesome
Break the Kentucky Saddler, the American Standardbred, and the Hungarian Half-bred.
7/19/2010
8:36:26 PM
Very Rare 6.4%
Manifest Destiny
Kill the last buffalo in the Great Plains in Single Player.
7/19/2010
8:24:30 PM
Ultra Rare 4.2%
Frontiersman
Obtain Legendary rank in any Single Player Ambient Challenge.
7/19/2010
8:09:39 PM
Very Rare 7.9%
On the Trail of de Vaca
Uncover every location on the map in Single Player.
7/16/2010
12:28:19 PM
Very Rare 6.6%
The Benefits of Civilization
Complete "And the Truth Will Set You Free".
7/16/2010
12:01:16 PM
Rare 22.6%