Complete "It’s The Final Farm Down" with premium Greek content.
As you progress through the campaign you will come across the start of a quest chain in your Capital City, the quest giving NPC being a "Helice Merchant." He will ask you to make 10 farms in under 10 minutes. Easy, right? Sure, but you'll have to finish each progressive quest in this chain (which the games states several times that the chain is optional) until you reach the final quest, "It's the Final Farm Down," which requires you to create 10 farms in under 5 minutes.
For this difficult task, I simply recommend restarting the map constantly until you have a group of deer within site of your village. Send all of your villagers there and build a storehouse, have 2 of the villagers farm the deer and the rest chop wood. You'll need to progress to Age II in order to create farms so chop wood/cut deer until you have 200 wood/food and advance in the ages. Now continue doing both until you can afford 3 more villagers (buy them as you can afford them and have them chop wood).
Maybe you'll be lucky like me and get Seed-Master Agape, an Ambassador that will decrease the cost of your farms by 30%. HUGE help for this one (I got it doing the 10 wave Crete quest).