Age of Empires II: Definitive Edition (PC) - Achievement - Battleship
Win the Historical Battle "Lepanto (1571)" without allowing any Turkish Transport Ship to unload on your shores.
There are only a few areas on your land that the Turkish fleet will attempt to land on, so it's not a case that you have to defend the entire coastline. In this video, I split my naval forces in to four groups - Each controlling an area where troops can potentially land. Your given a verbal notification when the enemy tries to land as well, so be mindful of that and react when you hear it to make sure your taking them out as soon as you can. It should be noted that they don't try to land immediately - You do have some time before the first Transport Ship will come, but this appears to be a time trigger. It is not triggered by you allying with the Greeks or completing your Wonder. There are a few small islands off your coast (some containing gold and stone) that you can build towers on to help you defend. You have access to Bombard Towers which make short work of the enemy ships.