Fix for Supreme Snow God Achievement 'bug' CHECK HERE
Well i was going for supreme snow god and had all gold in all events. The stats still said i was 239/240 or what ever it is (i was missing one gold medal). As you may have noticed there is no achievement related to getting all people stoked in the Zugspitze mountain and thus most likely left it 'unstoked'.
To get the Supreme Snow God achievement it seems you have to have 100% everything, not just Challenges and Media Callouts. So just go back to Zugspitze and get the 100 people stoked and achieve should pop. Hope this helps, it worked for me
Retail - Harry Potter HBP, 50 Cent BOTS, Quantum of Solace, Fight night round 3, NBA live 07, Mass Effect 2, King Kong, LOTR: Conquest, Modern Warfare 2, NFS: Undercover,
Amped 3, Bourne Conspiracy, Madden 09, Saw, Cabela's Safari, CSI: Hard Evidence, Halo Reach and God Father II
Arcade - Dash of Destruction