it's repetitive trash,but it's adictive and long, I love it
the concept of the game makes it extremely repetitive but that is the reason to play it, because it's direct action (it's like and "new old-school beat'em up"), you also get experience points for defeating enemies and new weapons, you have to play the game several times to get all the generals.
the story is based on the sengoku era of japan, although it never explains to much you can find tons of information in the internet of this era.
so if you are looking for a game that is fun but without any complications that is based on a real historical war try this game(or dynasty warriors if you
prefer a chinese concept)