Mercy Mk11 is a new game mode in the PlayStation 4 version of Call of Duty: WWII. It is a cooperative multiplayer map where players must work together to take down the enemy. To play Mercy Mk11, you will need to first unlock it from the game’s main menu. Once you have done so, open up the map and select it from the list of available maps. Players will then need to join a team and start playing. The objective of Mercy Mk11 is to help your teammate take down the enemy by killing as many enemies as possible. The player who kills the most enemies in a certain time period wins the match. There are three waves of enemies that each have different objectives, so players must be careful not to get killed too early on in order to win. Players can use any weapon they like, but it is recommended that they use shotguns because they deal more damage than rifles and pistols. Shotguns also have high fire rates which makes them great for taking out large groups of enemies quickly. Players can also use grenades if they feel like using them more than once per round in order to kill more enemies quickly.