Classic Marathon Infinity Achievements Here is the full list of all 13 Classic Marathon Infinity achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply I Know Who You AreComplete Classic Marathon Infinity I Totally Know Who You AreComplete Classic Marathon Infinity on Total Carnage difficulty Meet the New BossRead the first terminal in Rise, Robot, Rise RoadrunnerCripple the Pfhor warning system My Personal PeonOpen all the airlocks on Naw Man He's Close A Show of Good FaithCut power to the containment unit More Than One PathRead all seven Eat the Path terminals in the same playthrough Chapel GroanFully unblock the upper path before entering it, without using the secret switch Monsters In Dreams AssassinKill an invisible defender with the SPNKR Film BuffPick up a shotgun and SMG on Poor Yorick Circumstances Are CyclicalTake the wrong exit out of Electric Sheep 2 The Care and Feeding of SwitchesOpen the Thing What Kicks doors, then let them shut again VidmasterComplete the Vidmaster Challenge on Total Carnage difficulty