Age of Empires II: Definitive Edition (PC) - Achievement - Turkish Delight
Win the Historical Battle "Bapheus (1302)" by defeating all other Turkish factions without forming an alliance with any of them.
Apologies in advance if your following the video - This one is quite long winded. The reason being is that you have 3 Turkish factions to deal with prior to taking on your main enemy. The Turkish factions must be dealt with first. You are given the option to ally with one of them, but you must refrain from doing so in order to obtain this achievement, meaning you'll be surrounded from almost every side and under fairly regular attack. You'll get regular reinforcements arriving to help you and you also have access to Bombard Cannons which will be helpful as all of your enemies are in fortified positions with walls, towers and castles. Stone is in somewhat short supply, so building your own castles to push forward and claim land might not be an option for you, but once you have your resources in order which your given time to do in the beginning, raising an army with some Bombard Cannons to go with it isn't that hard - It's more just a long process eliminating your enemies given they are all in good defensive positions.