Alien Swarm: Reactive Drop

• Tactical co-op for up to 8 players with a top-down perspective
  
• Steam Workshop support for community maps and challenges
  
• New co-operative campaigns
  
• Challenges: Modifications of the game, just like Mutations in Left 4 Dead 2
  
• PvP: Deathmatch, Gun Game, Instagib, and Team Deathmatch
  
• Singleplayer: Play with improved bots on all our official maps
  
• New Aliens: HL2 antlion guards and more
  
• New Weapons: Desert Eagle, Devastator, and Combat Rifle, with more to come
  
• Over 100 Steam achievements
  
• Leaderboards: compete with your friends for the fastest mission completion
  
• Improved spectating: see hacking minigames and mouse movements in real time

• Sharpshooter
  Complete a mission with better than 90% accuracy.
• Peace Medic
  Heal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm.
• Ammo Technician
  Deploy 10 ammo stashes that are used by other marines.
• Autogun Expert
  Kill 250 Swarm with the Autogun.
• Smoking Barrels
  Kill 5 Swarm with explosive barrels in a single mission.
• Quick and Dead
  Kill a Swarm Boomer before it inflates.
• Outstanding Execution: Jacob's Rest
  Complete the Jacob's Rest campaign on Normal difficulty or harder without any marines dying.
• Slaughter Soldier
  Kill 250 Swarm with the Chainsaw.
• Combat Specialist
  Kill 250 Swarm with the Combat Rifle.
• Screamin' Eagle
  Kill 250 Swarm with the Desert Eagle.
• Devastated
  Kill 250 Swarm with the Devastator.
• Under the Gun
  Roll under a Swarm Ranger projectile.
• Easy Campaign: Jacob's Rest
  Complete the Jacob's Rest campaign on Easy difficulty or harder.
• Scrambled Eggs
  Destroy all Swarm Eggs in a mission without allowing any to hatch.
• Security Expert
  Complete 10 computer hacks without access being logged.
• Quick Load
  Successfully perform a fast reload.
• Gunslinger
  Successfully perform 5 fast reloads in a row.
• Circuit Breaker
  Complete 10 wire hacks without access being logged.
• Pyrotechnician
  Kill 250 Swarm with the Flamer.
• Stay Frosty
  Freeze 6 Swarm with a single Freeze Grenade.
• Grenadier Expert
  Kill 250 Swarm with the Grenade Launcher.
• Blast Radius
  Kill 6 Swarm with a single Grenade.
• Damage Amped
  Kill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission.
• Group Heal
  Heal all 4 marines with a single Heal Beacon.
• Bug Stomper
  Kill 100 Swarm Grubs.
• Hardcore
  Complete a mission on Brutal difficulty with Onslaught and Hardcore Friendly Fire enabled.
• Hard Campaign: Jacob's Rest
  Complete the Jacob's Rest campaign on Hard difficulty or harder.
• Hornet Barrage Expert
  Kill 100 Swarm with Hornet Barrage attacks.
• Brutal Campaign: Jacob's Rest
  Complete the Jacob's Rest campaign on Brutal difficulty.
• Infestation Savior
  Cure an Infested marine.
• Insane Campaign: Jacob's Rest
  Complete the Jacob's Rest campaign on Insane difficulty or harder.
• On the Ready Line
  Kill 1,000 Swarm.
• Another Bughunt
  Kill 5,000 Swarm.
• Kill Them All
  Kill 25,000 Swarm.
• Nuke From Orbit
  Kill 100,000 Swarm.
• Clear Firing
  Kill 25 drones without friendly fire. Four marines must be present in the mission.
• Tactical Explosives Expert
  Kill 100 Swarm with Laser Tripmines.
• Close Encounters
  Kill 20 Swarm with melee attacks in a single mission.
• Parasite Puncher
  Kill a Swarm Parasite with a melee attack.
• Firewall Specialist
  Kill 100 Swarm with Incendiary Mines.
• Minigun Master
  Kill 250 Swarm with the Minigun.
• Zero Mortality
  Complete a mission on Normal difficulty or harder without any marines dying.
• Normal Campaign: Jacob's Rest
  Complete the Jacob's Rest campaign on Normal difficulty or harder.
• Perfect
  Complete a mission on Normal difficulty or harder without receiving any damage.
• Short Controlled Bursts
  Complete a mission with no friendly fire incidents. Four marines must be present in the mission.
• Small Arms Specialist
  Kill 250 Swarm with the PDWs.
• Pistols Expert
  Kill 250 Swarm with the Pistols.
• Prototype Professional
  Kill 250 Swarm with the Prototype Rifle.
• Protect the Tech
  Guard the squad's tech so that he takes no damage during the hack.
• Railgun Specialist
  Kill 250 Swarm with the Rail Rifle.
• Assault Specialist
  Kill 250 Swarm with the Assault Rifle.
• Static Defender
  Kill 500 Swarm with deployable Sentry Guns.
• Shield Down
  Deliver the finishing blow to a Swarm Shieldbug.
• Shotgun Specialist
  Kill 250 Swarm with the Shotgun.
• Professional Marksman
  Kill 250 Swarm with the Marksman Rifle.
• Deima Surface Bridge Speed Run
  Complete Deima Surface Bridge within 2:30 on Normal difficulty or harder without any marines dying.
• Cargo Elevator Speed Run
  Complete Cargo Elevator within 2:50 on Normal difficulty or harder without any marines dying.
• Landing Bay Speed Run
  Complete Landing Bay within 1:25 on Normal difficulty or harder without any marines dying.
• SynTek Residential Speed Run
  Complete SynTek Residential within 2:30 on Normal difficulty or harder without any marines dying.
• Rydberg Reactor Speed Run
  Complete Rydberg Reactor within 3:10 on Normal difficulty or harder without any marines dying.
• Sewer Junction Speed Run
  Complete Sewer Junction within 1:30 on Normal difficulty or harder without any marines dying.
• Timor Station Speed Run
  Complete Timor Station within 4:25 on Normal difficulty or harder without any marines dying.
• Electro-Stunned
  Stun 6 Swarm with a single Stun Grenade.
• Technician Secured
  Finish a mission without the tech getting killed.
• High Voltage Expert
  Kill 250 Swarm with the Tesla Cannon.
• Armory Access
  Unlock all the available weapons.
• Vindicator Veteran
  Kill 250 Swarm with the Vindicator.
• Seal of Quality
  Seal a door with the welder.
• Outstanding Execution: Area 9800
  Complete the Area 9800 campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Lana's Escape
  Complete the Lana's Escape campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Operation Cleansweep
  Complete the Operation Cleansweep campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Orion's Threat
  Complete the Orion's Threat campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Paranoia
  Complete the Paranoia campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Research 7
  Complete the Research 7 campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Tears for Tarnor
  Complete the Tears for Tarnor campaign on Normal difficulty or harder without any marines dying.
• Outstanding Execution: Tilarus-5
  Complete the Tilarus-5 campaign on Normal difficulty or harder without any marines dying.
• Easy Campaign: Area 9800
  Complete the Area 9800 campaign on Easy difficulty or harder.
• Easy Campaign: Lana's Escape
  Complete the Lana's Escape campaign on Easy difficulty or harder.
• Easy Campaign: Operation Cleansweep
  Complete the Operation Cleansweep campaign on Easy difficulty or harder.
• Easy Campaign: Orion's Threat
  Complete the Orion's Threat campaign on Easy difficulty or harder.
• Easy Campaign: Paranoia
  Complete the Paranoia campaign on Easy difficulty or harder.
• Easy Campaign: Research 7
  Complete the Research 7 campaign on Easy difficulty or harder.
• Easy Campaign: Tears for Tarnor
  Complete the Tears for Tarnor campaign on Easy difficulty or harder.
• Easy Campaign: Tilarus-5
  Complete the Tilarus-5 campaign on Easy difficulty or harder.
• Hard Campaign: Area 9800
  Complete the Area 9800 campaign on Hard difficulty or harder.
• Hard Campaign: Lana's Escape
  Complete the Lana's Escape campaign on Hard difficulty or harder.
• Hard Campaign: Operation Cleansweep
  Complete the Operation Cleansweep campaign on Hard difficulty or harder.
• Hard Campaign: Orion's Threat
  Complete the Orion's Threat campaign on Hard difficulty or harder.
• Hard Campaign: Paranoia
  Complete the Paranoia campaign on Hard difficulty or harder.
• Hard Campaign: Research 7
  Complete the Research 7 campaign on Hard difficulty or harder.
• Hard Campaign: Tears for Tarnor
  Complete the Tears for Tarnor campaign on Hard difficulty or harder.
• Hard Campaign: Tilarus-5
  Complete the Tilarus-5 campaign on Hard difficulty or harder.
• Brutal Campaign: Area 9800
  Complete the Area 9800 campaign on Brutal difficulty.
• Brutal Campaign: Lana's Escape
  Complete the Lana's Escape campaign on Brutal difficulty.
• Brutal Campaign: Operation Cleansweep
  Complete the Operation Cleansweep campaign on Brutal difficulty.
• Brutal Campaign: Orion's Threat
  Complete the Orion's Threat campaign on Brutal difficulty.
• Brutal Campaign: Paranoia
  Complete the Paranoia campaign on Brutal difficulty.
• Brutal Campaign: Research 7
  Complete the Research 7 campaign on Brutal difficulty.
• Brutal Campaign: Tears for Tarnor
  Complete the Tears for Tarnor campaign on Brutal difficulty.
• Brutal Campaign: Tilarus-5
  Complete the Tilarus-5 campaign on Brutal difficulty.
• Insane Campaign: Area 9800
  Complete the Area 9800 campaign on Insane difficulty or harder.
• Insane Campaign: Lana's Escape
  Complete the Lana's Escape campaign on Insane difficulty or harder.
• Insane Campaign: Operation Cleansweep
  Complete the Operation Cleansweep campaign on Insane difficulty or harder.
• Insane Campaign: Orion's Threat
  Complete the Orion's Threat campaign on Insane difficulty or harder.
• Insane Campaign: Paranoia
  Complete the Paranoia campaign on Insane difficulty or harder.
• Insane Campaign: Research 7
  Complete the Research 7 campaign on Insane difficulty or harder.
• Insane Campaign: Tears for Tarnor
  Complete the Tears for Tarnor campaign on Insane difficulty or harder.
• Insane Campaign: Tilarus-5
  Complete the Tilarus-5 campaign on Insane difficulty or harder.
• Normal Campaign: Area 9800
  Complete the Area 9800 campaign on Normal difficulty or harder.
• Normal Campaign: Lana's Escape
  Complete the Lana's Escape campaign on Normal difficulty or harder.
• Normal Campaign: Operation Cleansweep
  Complete the Operation Cleansweep campaign on Normal difficulty or harder.
• Normal Campaign: Orion's Threat
  Complete the Orion's Threat campaign on Normal difficulty or harder.
• Normal Campaign: Paranoia
  Complete the Paranoia campaign on Normal difficulty or harder.
• Normal Campaign: Research 7
  Complete the Research 7 campaign on Normal difficulty or harder.
• Normal Campaign: Tears for Tarnor
  Complete the Tears for Tarnor campaign on Normal difficulty or harder.
• Normal Campaign: Tilarus-5
  Complete the Tilarus-5 campaign on Normal difficulty or harder.
• Landing Zone Speed Run
  Complete Landing Zone within 2:35 on Normal difficulty or harder without any marines dying.
• Cooling Pump Speed Run
  Complete Cooling Pump within 2:05 on Normal difficulty or harder without any marines dying.
• Power Generator Speed Run
  Complete Power Generator within 2:25 on Normal difficulty or harder without any marines dying.
• Wastelands Speed Run
  Complete Wastelands within 1:35 on Normal difficulty or harder without any marines dying.
• Lana's Bridge Speed Run
  Complete Lana's Bridge within 2:37 on Normal difficulty or harder without any marines dying.
• Lana's Complex Speed Run
  Complete Lana's Complex within 4:48 on Normal difficulty or harder without any marines dying.
• Lana's Maintenance Speed Run
  Complete Lana's Maintenance within 2:16 on Normal difficulty or harder without any marines dying.
• Lana's Sewer Speed Run
  Complete Lana's Sewer within 2:25 on Normal difficulty or harder without any marines dying.
• Lana's Vents Speed Run
  Complete Lana's Vents within 2:48 on Normal difficulty or harder without any marines dying.
• Landing Bay 7 Speed Run
  Complete Landing Bay 7 within 1:30 on Normal difficulty or harder without any marines dying.
• Storage Facility Speed Run
  Complete Storage Facility within 1:05 on Normal difficulty or harder without any marines dying.
• U.S.C. Medusa Speed Run
  Complete U.S.C. Medusa within 2:45 on Normal difficulty or harder without any marines dying.
• First Anomaly Speed Run
  Complete First Anomaly within 3:00 on Normal difficulty or harder without any marines dying.
• Niosa Refinery Speed Run
  Complete Niosa Refinery within 3:22 on Normal difficulty or harder without any marines dying.
• Close Contact Speed Run
  Complete Close Contact within 1:10 on Normal difficulty or harder without any marines dying.
• Crucial Point Speed Run
  Complete Crucial Point within 3:00 on Normal difficulty or harder without any marines dying.
• High Tension Speed Run
  Complete High Tension within 3:50 on Normal difficulty or harder without any marines dying.
• Hostile Places Speed Run
  Complete Hostile Places within 1:20 on Normal difficulty or harder without any marines dying.
• Unexpected Encounter Speed Run
  Complete Unexpected Encounter within 1:05 on Normal difficulty or harder without any marines dying.
• Transport Facility Speed Run
  Complete Transport Facility within 1:45 on Normal difficulty or harder without any marines dying.
• Jericho Mines Speed Run
  Complete Jericho Mines within 3:30 on Normal difficulty or harder without any marines dying.
• Illyn Forest Speed Run
  Complete Illyn Forest within 3:40 on Normal difficulty or harder without any marines dying.
• Research 7 Speed Run
  Complete Research 7 within 2:30 on Normal difficulty or harder without any marines dying.
• Abandoned Maintenance Tunnels Speed Run
  Complete Abandoned Maintenance Tunnels within 2:22 on Normal difficulty or harder without any marines dying.
• Insertion Point Speed Run
  Complete Insertion Point within 2:48 on Normal difficulty or harder without any marines dying.
• Oasis Colony Spaceport Speed Run
  Complete Oasis Colony Spaceport within 4:24 on Normal difficulty or harder without any marines dying.
• Arctic Infiltration Speed Run
  Complete Arctic Infiltration within 2:12 on Normal difficulty or harder without any marines dying.
• Area9800 Landingzone Speed Run
  Complete Area9800 Landingzone within 2:28 on Normal difficulty or harder without any marines dying.
• Cold Catwalks Speed Run
  Complete Cold Catwalks within 2:10 on Normal difficulty or harder without any marines dying.
• Communication Center Speed Run
  Complete Communication Center within 3:21 on Normal difficulty or harder without any marines dying.
• The Factory Speed Run
  Complete The Factory within 3:30 on Normal difficulty or harder without any marines dying.
• Midnight Port Speed Run
  Complete Midnight Port within 2:25 on Normal difficulty or harder without any marines dying.
• Road to Dawn Speed Run
  Complete Road to Dawn within 4:08 on Normal difficulty or harder without any marines dying.
• SynTek Hospital Speed Run
  Complete SynTek Hospital within 2:42 on Normal difficulty or harder without any marines dying.
• Yanaurus Mine Speed Run
  Complete Yanaurus Mine within 3:23 on Normal difficulty or harder without any marines dying.