Age of Empires II: Definitive Edition

This is done by beating an AI on the "Easiest" difficulty. So the wording of Peaceful is just off.

I combined this achievement with a Regicide game while also deleting my initial town centre. I then spammed some petards and killed the King with those units. They kill buildings really fast too, something which the King will be hiding in.

To setup this combination match:


Note that the treaty is optional. I did that so I could make the 100 Throwing Axemen (that's why I chose the Franks)

Deleting your TC (Town Centre) then will net you at the end of the game:




And of course the achievement what this guide is for

If you have another account, or a friend with the game, this achievement (and all the other “win as” achievements) can be done without any effort.

Go to Multiplayer and host a game. Make sure the settings are for 2 players and set to private to close it from a random joining. Once the lobby is created, click “Y” to open game setting, change the Game Mode to "Regicide", turn off the setting for being on the same team and save. Invite the other account/friend.

Start the game and have the other player resign. I had to back out of the game back to the lobby after the "victory" banner appeared for the achievement to pop.