^ This ^
With this link, you don't have to sign in to see what the current challenges are...
Of course, you can't track your progress unless you sign in.
Achievement Guides/Roadmaps: Madden NFL 11 Backyard Sports: Rookie Rush Cyber Troopers Virtual-On Force Mayhem 3D Family Game Night Fun Pack Dragons Lair Kinect Sesame Street TV DVD Kinect Sesame Street TV App: Season 1 Marvel Super Hero Squad: Comic Combat Nickelodeon Dance 2
Achievement Guides/Roadmaps (co-author): National Geographic Challenge!
Achievement Guides (co-author): LEGO Batman 2: DC Super Heroes
Roadmaps: LEGO Star Wars III: The Clone Wars