I have followed the required steps to unlock THREE achievements in the Xbox Live Arcade title "Defenders of Ardania"
Straight Flush: Build all tower types of one race in one mission.
Cunning: Win a level without towers.
Grandmaster: Complete all levels in Limited Resource mode.
I have been connected to LIVE the entire time I've been playing the game, and have even attempted the Cunning achievement upwards of seven times.
Is there anything that can be done to fix this?