I attack this guy who has very low stats and I have double the stats of him , I assasinate his soldiers about 5 times n kill him and I lose, then I use attack item and still lose why is this? Is there a strategy to win ?
You need to use attack potions and buy allies with high attack stats. This way you can easily win battles. The person your attacking may have a higher defense than your attack? If you raise your attack you'll have higher success rates. He could also have allies and/or def pots. Good luck.