How to defeat an army of samurai and snipers: Buy 80% knights and 20% defenders. Right after the beginning of the battle, use the Stunning Strategy and move your knights in rank (By dragging the Knight button at the bottom) to where the snipers are. The samurai will then focus on your defenders will your knights slay the snipers. Once the snipers are dead, reformulate your knights and drag them in lines, avoiding the reach of the samurai but still keeping them close enough to deal damage. Remember that a knight has a longer range than a samurai. This will eventually kill them.