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 wonDelta-ChadFinish the game on hard difficulty. 14 January 2026 - Add a guideHelpful storage roomUnlock all rooms with supplies inside. 12 January 2026 - Add a guideGood riddanceGet caught in an alien storm and successfully die there. 08 September 2025 - Add a guideUnnecessary crueltyKill the bullsquid before it gets into the hurricane. 08 September 2025 - Add a guideBlue lagoonSurvive the Xen arena without using the healing pool. 08 September 2025 - Add a guideVeteran of the shootersKill three alien controllers with the under-barrel grenade launcher. 08 September 2025 - Add a guideTo use a sledgehammer to crack a nutKill five headcrabs with the sniper rifle. 04 September 2025 - Add a guideMechanical manActivate the guard robot at the robot factory. 04 September 2025 - Add a guideLocomotiveGet through the place after parking without destroying an enemy SUV. 03 September 2025 - Add a guideIntimidating but ineffectiveTurn on the power and open the fence door without killing Garg. 03 September 2025 - Add a guideAnyway, you're already deadKill a struggling scientist in the basement. 03 September 2025 - Add a guideIt's high noon!Kill six enemies in a row with a single clip from your revolver without changing weapons. 03 September 2025 - Add a guideOops, nothing personalBlow up the container with the scientist inside. 03 September 2025 - Add a guideIt was difficult, but I succeededSave the security officer from three zombies in the lab. 01 September 2025 - Add a guideMight makes rightDestroy one Robotic Infantry unit with a melee weapon. 01 September 2025 - Add a guideOh, my!Find "interesting" photos. 01 September 2025 - Add a guideLow batteryGet additional points of armor from the technician three times. 01 September 2025 - Add a guideIt's a really big gunFind a shotgun early. 01 September 2025 - Add a guideSafety violationYou were squashed by a cargo container. 01 September 2025 - Add a guideFriends like you…Prevent security officer from listening to music. 01 September 2025 - Add a guideSomething else?Watch the post-credits scene. 31 August 2025 - Add a guideIt's based. It's Delta BasedFinish the campaign. 31 August 2025 - Add a guideMore than just a gamerFinish the game on medium difficulty. 31 August 2025 - Add a guideHeart-stoppingly cute momentEnter the portal. 31 August 2025 - Add a guideIn the line of fireKill two enemies with the Light Gun in one shot. 31 August 2025 - Add a guideDeforestationDestroy 25 Xen Trees. 31 August 2025 - Add a guideStrange placeVisit a rotating radioactive asteroid. 31 August 2025 - Add a guideFlies don't let sleepDestroy all alien hives in Xen. 31 August 2025 - Add a guidePunishment for ImmortalityDestroy 10 Xen Trees. 31 August 2025 - Add a guideJewelry workBehead a zombie using the pipe wrench. 31 August 2025 - Add a guideUnknown worldFind yourself in the alien world. 22 August 2025 - Add a guideFashionistaDiana equipped a protection suit. 22 August 2025 - Add a guideNo brains at all anymoreBehead 125 enemies. 22 August 2025 - Add a guideResuscitated hopeFind Diana in the tunnels. 22 August 2025 - Add a guideWe are saved… or not?Transmit a SOS signal from the helipad. 22 August 2025 - Add a guideScience and madnessStabilize the power generator. 22 August 2025 - Add a guideHurry up, before he looks away from us...It seems you've been robbed of something valuable. 22 August 2025 - Add a guideIt's redundantBehead 60 enemies. 22 August 2025 - Add a guideIn the darknessTurn off the light and leave the basement. 22 August 2025 - Add a guideSilence 2.0Pick up a silencer for SMG. 22 August 2025 - Add a guideOvertimeGet the cargo down to the railcar. 22 August 2025 - Add a guideDecapitation!Behead 25 enemies. 22 August 2025 - Add a guideSwiftly and without sufferingDump the chemicals. 22 August 2025 - Add a guideFree travelTake a trip on the monorail train. 22 August 2025 - Add a guideRadical problem solvingDemolish the jammed door. 22 August 2025 - Add a guideGot you!Save the scientist from zombie in the lab. 22 August 2025 - Add a guideHands off!Kill the headcrab inside the healing pod. 22 August 2025 - Add a guidePleasant meetingMeet Diana after the disaster. 18 August 2025 - Add a guideThree hatchets 777Find a bottle of healing liquid and drink it. 18 August 2025 - Add a guideAt the employer's expenseDrink 25 soda cans. 18 August 2025 - Add a guideI said don't go in thereEnter the barricaded room against the scientist's advice. 18 August 2025 - Add a guideWho's here?Turn on emergency power supply after the disaster. 18 August 2025 - Add a guideRare colorEquip a protection suit. 18 August 2025 - Add a guide