Fossilfuel Achievements Full list of all 28 Fossilfuel achievements.The base game contains 27 achievements, and there are 2 DLC packs containing 1 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 DLC Packs Group DLC packs together in list DLC Filter AllOwnedNone What are achievement flags? Click to find outApply Base Base Game (Excludes DLC) 833 27 342 (6%) Welcome to SierraStart your day at the Sierra Research Institute. Making FriendsGet to know some of the scientist. Build your headlampLand of the blind no more! First EncounterMeet Utahraptor. (Single Player) Long GrassDiscover the mystery of the ex game warden. TitanoboaDefeat Titanoboa. (Single Player) Hold on to your buttsRestore the sub-level power. Get to administrationYou have escaped the lower sub-level of Sierra. Judo-Chop!Snap a neck. AllosaurusDefeat an Allosaurus. (Single Player) Game over man!Make a last stand with the other survivors. Lizard-manTake down the mutant dino. (Single Player) OpenworldGet to the surface of the Great Sitkin Island. LaboratoryMake it to the Sierra laboratory. To Serve ManUnleash bugs onto the soldiers. Walk around moneyHave $1000 credits. Event HorizonFind the gravity grenade, "Black Hole" gun. Freak'in laser beamsGet the Focus Beam. Playing with PowerEnter the Power Plant. 3.6 RoentgenOverload the Nuclear Reactor. AZ-5Stabilize the Nuclear Reactor. Sharp ToothDefeat the T-Rex! Only way to be sureEnding B: Nuke Sierra. Cyber TankDefeat Elon Moosk, in his Cyber Tank. Life finds a wayEnding A: Find the truth. HardcoreBeat the game on the hardest setting. Super HardcoreBeat the game on hard, and get an S rank. Update V1.0 41 10 1 0.0022 (100%) Eight Leg FreakDefeat the Queen bug.