Full list of all 198 Alien Swarm: Reactive Drop achievements.
The base game contains 143 achievements, and there are 4 DLC packs containing 55 achievements.
Destroy all Swarm Eggs in a mission without allowing any to hatch.
Complete a mission on Brutal difficulty with Onslaught and Hardcore Friendly Fire enabled.
Complete a mission on Normal difficulty or harder without receiving any damage.
Complete SynTek Hospital within 2:42 on Normal difficulty or harder without any marines dying.
Complete Communication Center within 3:21 on Normal difficulty or harder without any marines dying.
Complete The Factory within 3:30 on Normal difficulty or harder without any marines dying.
Complete Yanaurus Mine within 3:23 on Normal difficulty or harder without any marines dying.
Complete Cold Catwalks within 2:10 on Normal difficulty or harder without any marines dying.
Complete Area9800 Landingzone within 2:28 on Normal difficulty or harder without any marines dying.
Complete Arctic Infiltration within 2:12 on Normal difficulty or harder without any marines dying.
Complete Road to Dawn within 4:08 on Normal difficulty or harder without any marines dying.
Complete Midnight Port within 2:25 on Normal difficulty or harder without any marines dying.
Complete the Tilarus-5 campaign on Normal difficulty or harder without any marines dying.
Complete Oasis Colony Spaceport within 4:24 on Normal difficulty or harder without any marines dying.
Complete Abandoned Maintenance Tunnels within 2:22 on Normal difficulty or harder without any marines dying.
Complete Insertion Point within 2:48 on Normal difficulty or harder without any marines dying.
Complete the Tears for Tarnor campaign on Normal difficulty or harder without any marines dying.
Complete Jericho Mines within 3:30 on Normal difficulty or harder without any marines dying.
Complete Illyn Forest within 3:40 on Normal difficulty or harder without any marines dying.
Complete Research 7 within 2:30 on Normal difficulty or harder without any marines dying.
Complete Transport Facility within 1:45 on Normal difficulty or harder without any marines dying.
Complete the Research 7 campaign on Normal difficulty or harder without any marines dying.
Complete Crucial Point within 3:00 on Normal difficulty or harder without any marines dying.
Complete High Tension within 3:50 on Normal difficulty or harder without any marines dying.
Complete Close Contact within 1:10 on Normal difficulty or harder without any marines dying.
Complete Hostile Places within 1:20 on Normal difficulty or harder without any marines dying.
Complete Unexpected Encounter within 1:05 on Normal difficulty or harder without any marines dying.
Complete the Paranoia campaign on Normal difficulty or harder without any marines dying.
Complete U.S.C. Medusa within 2:45 on Normal difficulty or harder without any marines dying.
Complete Landing Bay 7 within 1:30 on Normal difficulty or harder without any marines dying.
Complete Storage Facility within 1:05 on Normal difficulty or harder without any marines dying.
Complete Lana's Vents within 2:48 on Normal difficulty or harder without any marines dying.
Complete Lana's Maintenance within 2:16 on Normal difficulty or harder without any marines dying.
Complete Lana's Sewer within 2:25 on Normal difficulty or harder without any marines dying.
Complete Lana's Bridge within 2:37 on Normal difficulty or harder without any marines dying.
Complete the Lana's Escape campaign on Normal difficulty or harder without any marines dying.
Complete Lana's Complex within 4:48 on Normal difficulty or harder without any marines dying.
Complete Wastelands within 1:35 on Normal difficulty or harder without any marines dying.
Complete Power Generator within 2:25 on Normal difficulty or harder without any marines dying.
Complete Cooling Pump within 2:05 on Normal difficulty or harder without any marines dying.
Complete Landing Zone within 2:35 on Normal difficulty or harder without any marines dying.
Complete the Area 9800 campaign on Normal difficulty or harder without any marines dying.
Complete Timor Station within 4:25 on Normal difficulty or harder without any marines dying.
Complete Sewer Junction within 1:30 on Normal difficulty or harder without any marines dying.
Complete SynTek Residential within 2:30 on Normal difficulty or harder without any marines dying.
Complete Rydberg Reactor within 3:10 on Normal difficulty or harder without any marines dying.
Complete Cargo Elevator within 2:50 on Normal difficulty or harder without any marines dying.
Complete Deima Surface Bridge within 2:30 on Normal difficulty or harder without any marines dying.
Complete Landing Bay within 1:25 on Normal difficulty or harder without any marines dying.
Complete the Jacob's Rest campaign on Normal difficulty or harder without any marines dying.
Complete the Tears for Tarnor campaign on Brutal difficulty.
Complete the Tilarus-5 campaign on Brutal difficulty.
Complete the Research 7 campaign on Brutal difficulty.
Complete the Paranoia campaign on Brutal difficulty.
Complete the Operation Cleansweep campaign on Brutal difficulty.
Complete the Lana's Escape campaign on Brutal difficulty.
Complete the Tilarus-5 campaign on Insane difficulty or harder.
Complete the Tears for Tarnor campaign on Insane difficulty or harder.
Complete the Research 7 campaign on Insane difficulty or harder.
Complete the Paranoia campaign on Insane difficulty or harder.
Complete the Operation Cleansweep campaign on Normal difficulty or harder without any marines dying.
Complete the Operation Cleansweep campaign on Insane difficulty or harder.
Complete the Lana's Escape campaign on Insane difficulty or harder.
Complete the Tilarus-5 campaign on Hard difficulty or harder.
Complete the Tears for Tarnor campaign on Hard difficulty or harder.
Complete the Research 7 campaign on Hard difficulty or harder.
Complete the Paranoia campaign on Hard difficulty or harder.
Complete the Operation Cleansweep campaign on Hard difficulty or harder.
Kill 100,000 Swarm.
Kill 25,000 Swarm.
Complete the Lana's Escape campaign on Hard difficulty or harder.
Complete a mission with better than 90% accuracy.
Complete the Area 9800 campaign on Hard difficulty or harder.
Complete the Area 9800 campaign on Insane difficulty or harder.
Complete the Area 9800 campaign on Brutal difficulty.
Heal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm.
Complete the Jacob's Rest campaign on Insane difficulty or harder.
Complete the Jacob's Rest campaign on Brutal difficulty.
Complete the Jacob's Rest campaign on Normal difficulty or harder.
Complete the Jacob's Rest campaign on Hard difficulty or harder.
Complete the Tilarus-5 campaign on Easy difficulty or harder.
Complete the Tilarus-5 campaign on Normal difficulty or harder.
Complete a mission with no friendly fire incidents. Four marines must be present in the mission.
Complete the Tears for Tarnor campaign on Easy difficulty or harder.
Complete the Tears for Tarnor campaign on Normal difficulty or harder.
Complete the Research 7 campaign on Easy difficulty or harder.
Complete the Research 7 campaign on Normal difficulty or harder.
Kill 100 Swarm Grubs.
Complete the Paranoia campaign on Easy difficulty or harder.
Complete the Paranoia campaign on Normal difficulty or harder.
Complete the Operation Cleansweep campaign on Easy difficulty or harder.
Complete the Operation Cleansweep campaign on Normal difficulty or harder.
Complete the Lana's Escape campaign on Easy difficulty or harder.
Complete the Lana's Escape campaign on Normal difficulty or harder.
Complete the Area 9800 campaign on Easy difficulty or harder.
Complete the Area 9800 campaign on Normal difficulty or harder.
Kill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission.
Deliver the finishing blow to a Swarm Shieldbug.
Roll under a Swarm Ranger projectile.
Complete the Jacob's Rest campaign on Easy difficulty or harder.
Heal all 4 marines with a single Heal Beacon.
Complete 10 computer hacks without access being logged.
Freeze 6 Swarm with a single Freeze Grenade.
Complete a mission on Normal difficulty or harder without any marines dying.
Complete 10 wire hacks without access being logged.
Kill 250 Swarm with the Prototype Rifle.
Kill 250 Swarm with the Devastator.
Kill 5,000 Swarm.
Kill 250 Swarm with the Minigun.
Kill 250 Swarm with the Autogun.
Kill 100 Swarm with Incendiary Mines.
Kill 250 Swarm with the Vindicator.
Kill 100 Swarm with Laser Tripmines.
Kill 5 Swarm with explosive barrels in a single mission.
Kill 100 Swarm with Hornet Barrage attacks.
Kill 20 Swarm with melee attacks in a single mission.
Kill 500 Swarm with deployable Sentry Guns.
Kill 250 Swarm with the Desert Eagle.
Kill 250 Swarm with the Combat Rifle.
Kill 250 Swarm with the Grenade Launcher.
Kill 250 Swarm with the Marksman Rifle.
Kill 250 Swarm with the Chainsaw.
Kill 250 Swarm with the Flamer.
Kill 250 Swarm with the Rail Rifle.
Kill 250 Swarm with the Tesla Cannon.
Deploy 10 ammo stashes that are used by other marines.
Kill 250 Swarm with the PDWs.
Kill 1,000 Swarm.
Kill 250 Swarm with the Pistols.
Successfully perform 5 fast reloads in a row.
Kill a Swarm Boomer before it inflates.
Cure an Infested marine.
Kill 250 Swarm with the Shotgun.
Kill 250 Swarm with the Assault Rifle.
Unlock all the available weapons.
Stun 6 Swarm with a single Stun Grenade.
Kill 6 Swarm with a single Grenade.
Kill a Swarm Parasite with a melee attack.
Seal a door with the welder.
Successfully perform a fast reload.
Finish a mission without the tech getting killed.
Guard the squad's tech so that he takes no damage during the hack.
Kill 25 drones without friendly fire. Four marines must be present in the mission.
Kill 500 Swarm with the Medical SMG.
Kill 500 Swarm with Gas Grenades.
Kill 500 Swarm with the Heavy Rifle.
Complete BioGen Labs within 4:14 on Normal difficulty or harder without any marines dying.
Complete Invisible Threat within 1:13 on Normal difficulty or harder without any marines dying.
Complete Operation x5 within 3:28 on Normal difficulty or harder without any marines dying.
Complete Groundwork Labs within 2:25 on Normal difficulty or harder without any marines dying.
Complete Platform XVII within 3:02 on Normal difficulty or harder without any marines dying.
Complete Logistics Area within 1:10 on Normal difficulty or harder without any marines dying.
Complete the Nam Humanum campaign on Normal difficulty or harder without any marines dying.
Complete the BioGen Corporation campaign on Normal difficulty or harder without any marines dying.
Complete the BioGen Corporation campaign on Brutal difficulty.
Complete the Nam Humanum campaign on Brutal difficulty.
Complete the BioGen Corporation campaign on Insane difficulty or harder.
Complete the Nam Humanum campaign on Insane difficulty or harder.
Complete the Nam Humanum campaign on Normal difficulty or harder.
Complete the Nam Humanum campaign on Hard difficulty or harder.
Complete the BioGen Corporation campaign on Hard difficulty or harder.
Complete the BioGen Corporation campaign on Easy difficulty or harder.
Complete the BioGen Corporation campaign on Normal difficulty or harder.
Complete the Nam Humanum campaign on Easy difficulty or harder.
In Groundwork Labs, upload prohibited data to the ship.
Die in 25 different ways.
Complete the Accident 32 campaign on Normal difficulty or harder without any marines dying.
In Lab Ruins, defeat the Muon Gem boss in three hits.
Complete AMBER Complex within 8:00 on Normal difficulty or harder without any marines dying.
Complete Lab Ruins within 3:33 on Normal difficulty or harder without any marines dying.
Complete J5 Connector within 2:00 on Normal difficulty or harder without any marines dying.
Complete Confined Facility within 2:02 on Normal difficulty or harder without any marines dying.
Complete Research Center within 1:29 on Normal difficulty or harder without any marines dying.
Complete Powerhood within 2:07 on Normal difficulty or harder without any marines dying.
Complete Information Department within 1:42 on Normal difficulty or harder without any marines dying.
Complete Bunker within 1:30 on Normal difficulty or harder without any marines dying.
Complete Rapture within 2:00 on Normal difficulty or harder without any marines dying.
Complete Space Port Catastrophe within 1:50 on Normal difficulty or harder without any marines dying.
Finish Marine Academy with a score of at least 100 points.
Finish the volcano zone in Marine Academy without any marines dying.
Complete the Accident 32 campaign on Easy difficulty or harder.
Complete the Accident 32 campaign on Normal difficulty or harder.
Complete the Accident 32 campaign on Hard difficulty or harder.
Complete the Accident 32 campaign on Insane difficulty or harder.
Complete the Accident 32 campaign on Brutal difficulty.
Visit each zone (not including the lobby) in Marine Academy exactly once.
Complete the Reduction campaign on Easy difficulty or harder.
Complete the Reduction campaign on Normal difficulty or harder.
Complete the Reduction campaign on Hard difficulty or harder.
Complete the Reduction campaign on Insane difficulty or harder.
Complete the Reduction campaign on Brutal difficulty.
Complete Silent Station within 4:40 on Normal difficulty or harder without any marines dying.
Complete Operation Sandstorm within 3:00 on Normal difficulty or harder without any marines dying.
Complete Fallen City within 1:38 on Normal difficulty or harder without any marines dying.
Complete Stowaway within 1:15 on Normal difficulty or harder without any marines dying.
Complete Inevitable Escalation within 6:00 on Normal difficulty or harder without any marines dying.
Complete Nuclear Escort within 4:44 on Normal difficulty or harder without any marines dying.
Complete the Reduction campaign on Normal difficulty or harder without any marines dying.