I would consider myself a good player at this game but the acheivment "that we may live in peace" is really hard. this is th only one i have left. if someone can give me some strategy.... it would be great!
it helps if you do it in a scenario. i did mine in the "Blitzkrieg" scenario (i think, one where you get +1 army movement and 3 starting cities) as the aztecs (no wasted time healing) and i got it by 1600 BC. just make sure to get horseback riding, use horses, and once enemies start getting archer armies (you should work on getting gold and science) you should get mathematics and get a catapult army. don't forget about roads, too!
"The Undiscovered Country, From Whose Bourne No Traveler Returns" - Hamlet by Shakespeare
Really skoop? Come on. I actually did it my first time trying the Arabs. The +1 attack to all units is a huge help. So just go to iron works quickly. And build barracks then pump out legions. Also the mideval bonus gets you mathematics and catapults before anyone. Catapult army can beat any archer army. Use gold to build roads to move units faster. Also you need a bit of luck. Hope that all capitals are one island and you dont face the British. Those longbow archers are a beast. Good luck. Hope this helps.
Just make sure you save often. Luck also plays into a lot, I got super lucky on mine and the other capitals were all within a few squares of mine. If any of them are on an island or anything you're in trouble