Advance Wars - Days of Ruin - Platform: Nintendo DS

Unlock COs:
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Complete the indicated campaign mission to unlock the corresponding CO.

CO          How to unlock
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Caulder    - Complete mission 26 
Forthsythe - Complete mission 14 
Gage       - Complete mission 13 
Greyfield  - Complete mission 21 
Penny      - Complete mission 24 
Tabitha    - Complete mission 25 
Tasha      - Complete mission 12 
Waylon     - Complete mission 20

Unlock Medals:
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Medal                  - Task
Maps Cleared Medal     - Clear 150 maps 
S Rank Medal           - Obtain 50 S ranks on campaing mode 
Nests Medal            - Destroy 10 nests 
Wi-Fi Connection Medal - Clear 50 fights on Nintendo Wi-Fi Connection