One of the things I'm curious about is the owning leveled troops challenges. It's frustrating to already own level 2 troops by the time the own 10 level 2 troops challenge comes around. It says "own 10 level 2 troops." Why none of the level 2 troops made before the challenge count towards it is kinda backwards. When the "own a level 5 turret" challenge comes up and I already have one it's automatically completed. It's that way with any other challenge. The troop one needs to be fixed.