As soon as you click 'mods', you can't gain achievements until you return to the main menu and go to singleplayer. It adds a survival minigame in the form of a zombie apocalypse: dead units will not stay dead forever, they will all resurrect as Zombies and attack civilizations. You can install the Enhanced User Interface and that doesn't disable achievements, as do some other ones with manual install, but they will appear in your 'unmodded' singleplayer game. ↑ Originally the base game featured exactly one hundred achievements, but the number was increased by five with the Red Death achievements added in the September 2019 Update, by eleven with the June 2020 Update, by ten with the October 2020 Update and by 3 with the February 2021 Update.Īdded in the Rise and Fall expansion pack.Īdded in the Gathering Storm expansion pack. Zombie Defense is the eighth game mode in Civilization VI, introduced in the Portugal Pack.