OK, if you wish, I share you some more tips: Darious is OBVIOUSLY better than Cyrus. Tech is a keypont, having maths, construction and feudalism is a crucial point.
At the first some turns, scout your territory with the scout and the archer. Start to build pasture or road to horse. Start to build a barrack. Go back with your archer to capital after a few turns. Try to think over from which direction will be more barbs attack, defend that point. Take care of the horse, food resources can go, but not the horse.
If you have built more than half of the barrack before getting horse, finish it, otherwise swap to your first immortal. Don't build archers or warriors. Immortals ASAP. 1 or 2 of them needs to stay at capital against barbs before AIs build their 3rd cities. Whenever you have one single immortal available, go and attack one of the AI-s to get 1-2 workers and/or destroy stategic resources. Early rush only can be done if there is no spearmen in cities what you want to conquer.
You are getting closer to maths and have some workers now. Build road to the nearest city you want to conquer and keep in mind that you are abou to do something anti-environmentalist.
Time has gone, you discovered maths and AIs built their 3rd cities, some of them is close to you. AIs are vulnerable at this time, attack them wo hesitating. 3 immortals enough if there are 2 archers. Even 2 is enough if the city is just being found (one more hint about settings: check "no city razing". If you don't understand why, stop reading).
After conquering a city and not having enough immortals to get another city, just make peace and choose another AI to attack. There might be some barb cities to conquer as well.
Right, so, by now you should have about 5-6 cities. AI-s are all alive (except maybeone of them). You only have lost some few immortals, but to continue, you need to produce some catapults (tech rush again). With catapults, more heavily defended cities can be conquered. You don't need to totally destroy an AI, that's just waste of time. Get heredity rule from an AI (they will hopefully trade it to you for construction). Get feudalism quickly. This is the most important thing at this moment. If it seem you won't be able to get feudalism before one of the AIs possibly willing to capitulate, get alphabet and produce tech in cities, start a golden age, whatever.
Right, now organize your further attack plan. Attack in the direction where more AIs can be reached (saves a lot of turn). After feudalism I research paper, maybe it is not best way. If you have ivory, research horseback riding to get elephants. Your army is still mainly cats and immortals and need some development. Attach some few axemen and spearmen. Continue to build immortals in distant cities. The vast majority should produce cats and swordsman/elephants.
Attack only one AI at a time, collect as much troops as you can (but if there are some which is so far away, don't waste your time). Attack always the weakest AIs weakest and closest cities. If you are lucky enough, the attacked AI might capitulate w/o a though battle if he loses 1-2 cities in the first 1-2 turn of attack.
OK, now you are getting stronger and stronger. Give some of your techs and resources to your vassals, and they will help you a bit. Sometimes they even conquer cities.
Your are about to have some macemen, but it's not that important as long as AIs doesn'T have longbowmen. You are closing about the end, about 4 AIs left. Now you can think about fighting against more AIs. It's really up to the situation. Apart from that, this part of the game is the less strategical. So many units to control... Just send them to one or more "meeting points".
And... then a chess table will be shown, and submit your game, but not if it is better then mine
