Medals are awards won on the 39 clues website through playing in Arena 39 Or playing missions and adding cards.
Medals are catergorized into three main sections:
1. The 39 Clues
2. Cahills vs. Vespers
3. Agent Extras
THE 39 CLUES:Here are the medals for collecting
clues. From best to worst.: Here are the the book, combo and mission medals: