Delta Particles Achievements Here is the full list of all 53 Delta Particles achievements.Filter Achievement View View Image viewList view Sort by Won first then 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 AllWonNot wonGood riddanceGet caught in an alien storm and successfully die there. 16 May 2026 - Add a guideDeforestationDestroy 25 Xen Trees. 30 December 2025 - Add a guideBlue lagoonSurvive the Xen arena without using the healing pool. 30 December 2025 - Add a guideStrange placeVisit a rotating radioactive asteroid. 30 December 2025 - Add a guidePunishment for ImmortalityDestroy 10 Xen Trees. 30 December 2025 - Add a guideHeart-stoppingly cute momentEnter the portal. 30 December 2025 - Add a guideFashionistaDiana equipped a protection suit. 30 December 2025 - Add a guideUnknown worldFind yourself in the alien world. 30 December 2025 - Add a guideAnyway, you're already deadKill a struggling scientist in the basement. 30 December 2025 - Add a guideSilence 2.0Pick up a silencer for SMG. 30 December 2025 - Add a guideResuscitated hopeFind Diana in the tunnels. 01 December 2025 - Add a guideNo brains at all anymoreBehead 125 enemies. 18 April 2025 - Add a guideWe are saved… or not?Transmit a SOS signal from the helipad. 18 April 2025 - Add a guideMechanical manActivate the guard robot at the robot factory. 18 April 2025 - Add a guideLocomotiveGet through the place after parking without destroying an enemy SUV. 29 March 2025 - Add a guideScience and madnessStabilize the power generator. 29 March 2025 - Add a guideIntimidating but ineffectiveTurn on the power and open the fence door without killing Garg. 23 March 2025 - Add a guideHurry up, before he looks away from us...It seems you've been robbed of something valuable. 23 March 2025 - Add a guideIn the darknessTurn off the light and leave the basement. 23 March 2025 - Add a guideIt's high noon!Kill six enemies in a row with a single clip from your revolver without changing weapons. 23 March 2025 - Add a guideIt's redundantBehead 60 enemies. 23 March 2025 - Add a guideOvertimeGet the cargo down to the railcar. 23 March 2025 - Add a guideVeteran of the shootersKill three alien controllers with the under-barrel grenade launcher. 23 March 2025 - Add a guideIn the line of fireKill two enemies with the Light Gun in one shot. 23 March 2025 - Add a guideSwiftly and without sufferingDump the chemicals. 23 March 2025 - Add a guideFree travelTake a trip on the monorail train. 23 March 2025 - Add a guideIt was difficult, but I succeededSave the security officer from three zombies in the lab. 23 March 2025 - Add a guideRadical problem solvingDemolish the jammed door. 23 March 2025 - Add a guideGot you!Save the scientist from zombie in the lab. 23 March 2025 - Add a guideMight makes rightDestroy one Robotic Infantry unit with a melee weapon. 23 March 2025 - Add a guideHands off!Kill the headcrab inside the healing pod. 23 March 2025 - Add a guideDelta-ChadFinish the game on hard difficulty. 23 March 2025 - Add a guideMore than just a gamerFinish the game on medium difficulty. 23 March 2025 - Add a guideSomething else?Watch the post-credits scene. 23 March 2025 - Add a guideIt's based. It's Delta BasedFinish the campaign. 23 March 2025 - Add a guideThree hatchets 777Find a bottle of healing liquid and drink it. 23 March 2025 - Add a guideOh, my!Find "interesting" photos. 23 March 2025 - Add a guidePleasant meetingMeet Diana after the disaster. 23 March 2025 - Add a guideDecapitation!Behead 25 enemies. 23 March 2025 - Add a guideLow batteryGet additional points of armor from the technician three times. 23 March 2025 - Add a guideI said don't go in thereEnter the barricaded room against the scientist's advice. 23 March 2025 - Add a guideTo use a sledgehammer to crack a nutKill five headcrabs with the sniper rifle. 23 March 2025 - Add a guideIt's a really big gunFind a shotgun early. 23 March 2025 - Add a guideJewelry workBehead a zombie using the pipe wrench. 23 March 2025 - Add a guideWho's here?Turn on emergency power supply after the disaster. 23 March 2025 - Add a guideAt the employer's expenseDrink 25 soda cans. 23 March 2025 - Add a guideSafety violationYou were squashed by a cargo container. 23 March 2025 - Add a guideFriends like you…Prevent security officer from listening to music. 23 March 2025 - Add a guideRare colorEquip a protection suit. 23 March 2025 - Add a guideFlies don't let sleepDestroy all alien hives in Xen. Locked - Add a guideUnnecessary crueltyKill the bullsquid before it gets into the hurricane. Locked - Add a guideOops, nothing personalBlow up the container with the scientist inside. Locked - Add a guideHelpful storage roomUnlock all rooms with supplies inside. Locked - Add a guide