NOTE: spring update made the guardians harder but you can still farm Lot's of Rogues. Just build some towers at the camp.Farming level 20-25 chests:
A common method on farming Blueprints for the "Build XXX" Achievements is to do the "Lot's of Rogues" quest in Argos. It will become available after doing some quests there and is a repeatable.
The trick is not to finish the quest. You just have to farm the camps as they always spawn on the same spots and you start with a lot of Villagers, Resources and a Fortress. The camp on the last repeatable quest is at the top right corner of the map. Just rush with your Villagers or some Units there and as soon as you loot the camp, restart the mission and repeat. The Quest is only repeatable every 12 hours, so do not complete the mission.
You can try to do the mission on Elite to raise your chances on better quality items. Try to find the fastest way to clean the camp for yourself. For example you could build Towers at the Camp or build some Units (elephants) from the Fortress. Feel free to comment your optimizations.
"Lot's of Rogues" has some prequests with the same name before it becomes repeatable. Each one gets harder and finally the last one will be the repeatable. The prequests have more camps than the last one. For example the last quest has only one camp at the top right corner but the second one has an additional one on the left side. So i highly recommend stopping on one of these and farming there as you will get more chests.
It takes approximately 1:30 minutes to clear the camp depending on the difficulty. Every additional camp should take 30 more seconds to complete. On your last farming you should complete the mission as you will get some good rewards and chests from it.NOTE: spring update made the guardians harder so farming this method is outdated. i'll leave it here in case they change it again.Farming level 35 chests:
Here is a nice Youtube Video showing how to farm level 35 chests on the recapturing mission for Amathus in Cyprus. Read the description, the camps are always spawning at the same position.
Credit goes to Safe Base from the Age of Empires Online Forums. He is really in to this game and has tons of guides how to solo legendary missions or elite meet in crete which you also need for an achievement if you have the crete booster pack. He is using the Advisor Nekhbet to train Desert Swordsman from the Fortress. I bet you can use any Age 3 Advisors to train a special unit out of it but try to use one with low costs. The Sparabara from the Persian Civ are very cheap too.
AoEO Forums: http://forums.ageofempiresonline.com/forums/default.aspx?Gro...
You can farm the following Blueprints on these missions:
I don't know what the level requirements are for the chests to contain a specific blueprint but i do know that the sphinx is dropping from level 35 chests and is the hardest to get. So i guess the others are dropping from lower chests beginning from level 20. I got my Sphinx from farming camps in Amathus (not working anymore).
You can also farm Moe’s Mystorium on Lot's of Rogues. Having that, you can spend your money there or just visit a player city who has it already. Remember to buy level 20 chests or higher. I don't suggest buying level 40 chests as the Sphinx already drops at level 35.
For some extra Gold and Points you should accept the two global quests for killing wolves and bandits.
GAZZ16 from X360A opened a thread to gather informations on drop locations and farming methods. You can find it here: http://www.xbox360achievements.org/forum/showthread.php?t=34...