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 wonIt's redundantBehead 60 enemies. 13 August 2025 - Add a guideHurry up, before he looks away from us...It seems you've been robbed of something valuable. 13 August 2025 - Add a guideIn the darknessTurn off the light and leave the basement. 29 July 2025 - Add a guideSilence 2.0Pick up a silencer for SMG. 29 July 2025 - Add a guideOops, nothing personalBlow up the container with the scientist inside. 29 July 2025 - Add a guideOvertimeGet the cargo down to the railcar. 29 July 2025 - Add a guideSwiftly and without sufferingDump the chemicals. 29 July 2025 - Add a guideDecapitation!Behead 25 enemies. 29 July 2025 - Add a guideFree travelTake a trip on the monorail train. 29 July 2025 - Add a guideRadical problem solvingDemolish the jammed door. 29 July 2025 - Add a guideHands off!Kill the headcrab inside the healing pod. 29 July 2025 - Add a guidePleasant meetingMeet Diana after the disaster. 29 July 2025 - Add a guideOh, my!Find "interesting" photos. 29 July 2025 - Add a guideLow batteryGet additional points of armor from the technician three times. 29 July 2025 - Add a guideI said don't go in thereEnter the barricaded room against the scientist's advice. 29 July 2025 - Add a guideIt's a really big gunFind a shotgun early. 29 July 2025 - Add a guideJewelry workBehead a zombie using the pipe wrench. 29 July 2025 - Add a guideWho's here?Turn on emergency power supply after the disaster. 29 July 2025 - Add a guideFriends like you…Prevent security officer from listening to music. 29 July 2025 - Add a guideRare colorEquip a protection suit. 29 July 2025 - Add a guideIt's based. It's Delta BasedFinish the campaign. Locked - Add a guideScience and madnessStabilize the power generator. Locked - Add a guideWe are saved… or not?Transmit a SOS signal from the helipad. Locked - Add a guideResuscitated hopeFind Diana in the tunnels. Locked - Add a guideFashionistaDiana equipped a protection suit. Locked - Add a guideUnknown worldFind yourself in the alien world. Locked - Add a guideStrange placeVisit a rotating radioactive asteroid. Locked - Add a guideHeart-stoppingly cute momentEnter the portal. Locked - Add a guideMore than just a gamerFinish the game on medium difficulty. Locked - Add a guideDelta-ChadFinish the game on hard difficulty. Locked - Add a guideThree hatchets 777Find a bottle of healing liquid and drink it. Locked - Add a guideFlies don't let sleepDestroy all alien hives in Xen. Locked - Add a guideSafety violationYou were squashed by a cargo container. Locked - Add a guideUnnecessary crueltyKill the bullsquid before it gets into the hurricane. Locked - Add a guideGood riddanceGet caught in an alien storm and successfully die there. Locked - Add a guideAnyway, you're already deadKill a struggling scientist in the basement. Locked - Add a guideHelpful storage roomUnlock all rooms with supplies inside. Locked - Add a guideSomething else?Watch the post-credits scene. Locked - Add a guideIt was difficult, but I succeededSave the security officer from three zombies in the lab. Locked - Add a guideLocomotiveGet through the place after parking without destroying an enemy SUV. Locked - Add a guideIntimidating but ineffectiveTurn on the power and open the fence door without killing Garg. Locked - Add a guideBlue lagoonSurvive the Xen arena without using the healing pool. Locked - Add a guideGot you!Save the scientist from zombie in the lab. Locked - Add a guideMechanical manActivate the guard robot at the robot factory. Locked - Add a guideAt the employer's expenseDrink 25 soda cans. Locked - Add a guideVeteran of the shootersKill three alien controllers with the under-barrel grenade launcher. Locked - Add a guideNo brains at all anymoreBehead 125 enemies. Locked - Add a guideIt's high noon!Kill six enemies in a row with a single clip from your revolver without changing weapons. Locked - Add a guidePunishment for ImmortalityDestroy 10 Xen Trees. Locked - Add a guideDeforestationDestroy 25 Xen Trees. Locked - Add a guideMight makes rightDestroy one Robotic Infantry unit with a melee weapon. Locked - Add a guideTo use a sledgehammer to crack a nutKill five headcrabs with the sniper rifle. Locked - Add a guideIn the line of fireKill two enemies with the Light Gun in one shot. Locked - Add a guide