This achievement can be earned in a multiplayer situation where you’re either the defender or attacker of a town or castle with sufficient space on the ramparts for you to kick an enemy off. It’s fairly easy to earn so long as you focus on staying around the walls of a settlement, and there should be plenty of inexperienced players who linger on the edge of a wall, begging to be kicked off! You can try this in the midst of a chaotic battle, or you can attempt to goad an enemy player into chasing you near the edge of a wall, then wait for them to get close enough for you to perform a kick.