Outbreak: Epidemic Achievements Full list of all 10 Outbreak: Epidemic achievements worth 1,000 gamerscore. It takes around 0.5-1 hour to unlock all of the achievements on Xbox One.Filter Achievement View View Image viewList view Sort by TrueAchievement desc TrueAchievement asc Achievement name desc Achievement name asc GamerScore desc GamerScore asc TA Ratio desc TA Ratio asc Gamers desc Gamers asc Xbox.com order Date won desc Date won asc Flag Filter All None 10 Offline Mode 10 Single Player 4 Main Storyline 3 Difficulty Specific 4 Stackable Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Overwhelming InfectionDie. 2 guidesTake Down the HordeClear Onslaught Mode on any scenario and difficulty. 2 guidesEasy PeasyClear a Campaign Scenario on Easy Difficulty or Higher. 2 guidesA Walk in the ParkClear a Campaign scenario on Normal Difficulty or Higher. 2 guidesBrutal BiohazardClear a Campaign scenario on Biohazard Difficulty or Higher. 2 guidesThe Nightmare RagesClear a Campaign scenario on Nightmare Difficulty. 2 guidesAim for the Head!Defeat a Zombie. 2 guidesThey're Hunting You...Defeat a Reptile. 2 guidesEnforcing the ApocalypseDefeat an Enforcer. 2 guidesToo Strong For YouDefeat a Brute 2 guides