1.choose houkkaido,cover fire 2.only buy gladiator ,on day 2 strike aomori,kill the archer first then try not fight with skeleton/gladiator,choose cannon. 3.when you get yamagata and miyagi ,buy only ninja,and when u get 4*25 ninjas u can wipe out the japan 4.for alien,the use samurai to capture outer island, when u conquered all 3 outer island,use 2 groups of samurais to wipe out the weakers and 1 groups of sniper to kill the boss