All I did was save at the begnning of the last level and when I loaded it: Dude! You just completed the Advanced Warrior achievement in Battalion: Nemesis and won the Advanced Warrior badge and 30 points!
Odd bug
This game is based too much on luck though. Only badges I can see would be for challenges. In the main game, you can just refresh until you get a lot of good cards.
 "Monster Slayers"){kind=icon}
 "Frontier"){kind=icon}
 "Feudalism II"){kind=icon}
 "Shoot: the Shootorial Game"){kind=icon}
 "Talesworth Arena: Death Watch"){kind=icon}
 "Ether War"){kind=icon}
 "colourPod 2: dimensionPod"){kind=icon}
 "Kongai"){kind=icon}
 "Battalion: Nemesis"){kind=icon}
 "The Necronomicon"){kind=icon}
 "Hexiom Connect"){kind=icon}
 "Runescape"){kind=icon}
 "Merlin's Revenge 3"){kind=icon}