This game is wonderfully simple, yet the strategy is perfectly balanced. The achievements and rewards add a lot of extra fun - trying to beat a level just the right way, reminds me of the old Shining Force days of leveling up your weaklings to keep a balanced team. Twice I encountered the same bug where the game stopped awarding achievements somewhere around the 3 world. At the point I moved on to Lost Star- equally as awesome but I prefer the medieval theme. Other than that bug, Great work!