Alien Swarm Achievements Here is the full list of all 66 Alien Swarm 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 Flag Filter All None 66 Online Mode 2 Main Storyline 15 Difficulty Specific 5 Stackable 27 Cumulative + 1 Level 66 Cooperative 9 Time/Date 4 x4 Players Required Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Clear FiringKill 25 drones without friendly fire. Four marines must be present in the mission. Short Controlled BurstsComplete a mission with no friendly fire incidents. Four marines must be present in the mission. Shield DownDeliver the finishing blow to a Swarm Shieldbug. Blast RadiusKill 6 Swarm with a single Grenade. SharpshooterComplete a mission with better than 90% accuracy. PerfectComplete a mission on Normal difficulty or harder without receiving any damage. Scrambled EggsDestroy all Swarm Eggs in a mission without allowing any to hatch. Bug StomperKill 100 Swarm Grubs. Parasite PuncherKill a Swarm Parasite with a melee attack. Close EncountersKill 20 Swarm with melee attacks in a single mission. Smoking BarrelsKill 5 Swarm with explosive barrels in a single mission. Infestation SaviorCure an Infested marine. Circuit BreakerComplete 10 wire hacks without access being logged. Security ExpertComplete 10 computer hacks without access being logged. Group HealHeal all 4 marines with a single Heal Beacon. Damage AmpedKill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission. GunslingerSuccessfully perform 5 fast reloads in a row. Quick LoadSuccessfully perform a fast reload. Peace MedicHeal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm. Protect the TechGuard the squad's tech so that he takes no damage during the hack. Technician SecuredFinish a mission without the tech getting killed. Electro-StunnedStun 6 Swarm with a single Stun Grenade. Seal of QualitySeal a door with the welder. Under the GunRoll under a Swarm Ranger projectile. Quick and DeadKill a Swarm Boomer before it inflates. Stay FrostyFreeze 6 Swarm with a single Freeze Grenade. Ammo TechnicianDeploy 10 ammo stashes that are used by other marines. Static DefenderKill 500 Swarm with deployable Sentry Guns. Assault SpecialistKill 250 Swarm with the Assault Rifle. Prototype ProfessionalKill 250 Swarm with a Prototype Rifle. Autogun ExpertKill 250 Swarm with an Autogun. Shotgun SpecialistKill 250 Swarm with a Shotgun. Vindicator VeteranKill 250 Swarm with a Vindicator. Pistols ExpertKill 250 Swarm with Twin Pistols. Small Arms SpecialistKill 250 Swarm with PDWs. High Voltage ExpertKill 250 Swarm with a Tesla Cannon. Railgun SpecialistKill 250 Swarm with a Rail Rifle. PyrotechnicianKill 250 Swarm with a Flamethrower. Slaughter SoldierKill 250 Swarm with a Chainsaw. Minigun MasterKill 250 Swarm with a Minigun. Professional MarksmanKill 250 Swarm with a Marksman Rifle. Grenadier ExpertKill 250 Swarm with a Grenade Launcher. Hornet Barrage ExpertKill 100 Swarm with Hornet Barrages. Tactical Explosives ExpertKill 100 Swarm with Laser Tripmines. Firewall SpecialistKill 100 Swarm with Incendiary Mines. Armory AccessUnlock all the available weapons. Easy CampaignComplete the Jacob's Rest campaign on Easy difficulty or harder. Normal CampaignComplete the Jacob's Rest campaign on Normal difficulty or harder. Hard CampaignComplete the Jacob's Rest campaign on Hard difficulty or harder. Insane CampaignAwarded for finishing the Jacob campaign on Insane difficulty. On the Ready LineKill 1,000 Swarm. Another BughuntKill 5,000 Swarm. Kill Them AllKill 25,000 Swarm. Nuke From OrbitKill 100,000 Swarm. Landing Bay Speed RunComplete Landing Bay within 1:25 on Normal difficulty or harder without any marines dying. Cargo Elevator Speed RunComplete Cargo Elevator within 2:50 on Normal difficulty or harder without any marines dying. Deima Surface Bridge Speed RunComplete Deima Surface Bridge within 2:30 on Normal difficulty or harder without any marines dying. Rydberg Reactor Speed RunComplete Rydberg Reactor within 3:10 on Normal difficulty or harder without any marines dying. SynTek Residential Speed RunComplete SynTek Residential within 2:30 on Normal difficulty or harder without any marines dying. Sewer Junction Speed RunComplete Sewer Junction within 1:30 on Normal difficulty or harder without any marines dying. Timor Station Speed RunComplete Timor Station within 4:25 on Normal difficulty or harder without any marines dying. Outstanding ExecutionComplete a campaign on Normal difficulty or harder without any marines dying. Zero MortalityComplete a mission on Normal difficulty or harder without any marines dying. Hat TrickComplete 2 co-op missions online. Earns a Team Fortress 2 parasite hat. Brutal CampaignAwarded for finishing the Jacob campaign on Brutal difficulty. HardcoreComplete any mission on Brutal difficulty with Onslaught and Hardcore Friendly Fire enabled.