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About the game
Achievements·
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Difficulty
Free to Play
Co-op
Action
+17
Alien Swarm
Valve
· 2010
Co-operative multiplayer game and complete code base available for free.
880 pts
Completion rate: 15%
Owners: 0
About
Achievements
66Reviews
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About the game
0:00 / 0:00
Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community.
Available free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.
Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.
Available free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.
Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.
- Tactical, 4 player co-op action game with a top-down perspective
- Complete game code and mod tools
- Unlock persistent items by gaining levels
- Over 40 weapons and equipment with countless loadout configurations
- 4 unique classes and 8 unique characters
- Matchmaking, Steam Cloud, Steam Stats
- 64 achievements
- Tile-based map generation tool
- Powered by Source and Steam
Achievements·66
Technician Secured
Finish a mission without the tech getting killed.
55.6% · 3 pts
55.6% · 3 pts
Hat Trick
Complete 2 co-op missions online. Earns a Team Fortress 2 parasite hat.
55.1% · 3.1 pts
55.1% · 3.1 pts
Quick and Dead
Kill a Swarm Boomer before it inflates.
47.3% · 3.4 pts
47.3% · 3.4 pts
Shield Down
Deliver the finishing blow to a Swarm Shieldbug.
43.1% · 3.7 pts
43.1% · 3.7 pts
Protect the Tech
Guard the squad's tech so that he takes no damage during the hack.
41.1% · 3.9 pts
41.1% · 3.9 pts
Quick Load
Successfully perform a fast reload.
40.5% · 3.9 pts
40.5% · 3.9 pts
Seal of Quality
Seal a door with the welder.
38.7% · 4 pts
38.7% · 4 pts
Zero Mortality
Complete a mission on Normal difficulty or harder without any marines dying.
36.4% · 4.3 pts
36.4% · 4.3 pts
Under the Gun
Roll under a Swarm Ranger projectile.
35.4% · 4.3 pts
35.4% · 4.3 pts
Clear Firing
Kill 25 drones without friendly fire. Four marines must be present in the mission.
34.1% · 4.5 pts
34.1% · 4.5 pts
Sharpshooter
Complete a mission with better than 90% accuracy.
32.7% · 4.6 pts
32.7% · 4.6 pts
Close Encounters
Kill 20 Swarm with melee attacks in a single mission.
32.2% · 4.7 pts
32.2% · 4.7 pts
On the Ready Line
Kill 1,000 Swarm.
31.7% · 4.7 pts
31.7% · 4.7 pts
Easy Campaign
Complete the Jacob's Rest campaign on Easy difficulty or harder.
29.3% · 5.1 pts
29.3% · 5.1 pts
Infestation Savior
Cure an Infested marine.
29.3% · 5.1 pts
29.3% · 5.1 pts
Parasite Puncher
Kill a Swarm Parasite with a melee attack.
27.6% · 5.3 pts
27.6% · 5.3 pts
Scrambled Eggs
Destroy all Swarm Eggs in a mission without allowing any to hatch.
27% · 5.4 pts
27% · 5.4 pts
Smoking Barrels
Kill 5 Swarm with explosive barrels in a single mission.
27% · 5.4 pts
27% · 5.4 pts
Normal Campaign
Complete the Jacob's Rest campaign on Normal difficulty or harder.
25.7% · 5.6 pts
25.7% · 5.6 pts
Autogun Expert
Kill 250 Swarm with an Autogun.
25.5% · 5.7 pts
25.5% · 5.7 pts
Group Heal
Heal all 4 marines with a single Heal Beacon.
25.1% · 5.7 pts
25.1% · 5.7 pts
Assault Specialist
Kill 250 Swarm with the Assault Rifle.
24.8% · 5.8 pts
24.8% · 5.8 pts
Gunslinger
Successfully perform 5 fast reloads in a row.
23.6% · 6 pts
23.6% · 6 pts
Prototype Professional
Kill 250 Swarm with a Prototype Rifle.
23.3% · 6.1 pts
23.3% · 6.1 pts
Pyrotechnician
Kill 250 Swarm with a Flamethrower.
23.2% · 6.1 pts
23.2% · 6.1 pts
Electro-Stunned
Stun 6 Swarm with a single Stun Grenade.
22.8% · 6.2 pts
22.8% · 6.2 pts
Armory Access
Unlock all the available weapons.
21.6% · 6.5 pts
21.6% · 6.5 pts
Blast Radius
Kill 6 Swarm with a single Grenade.
21.2% · 6.6 pts
21.2% · 6.6 pts
Short Controlled Bursts
Complete a mission with no friendly fire incidents. Four marines must be present in the mission.
20.7% · 6.7 pts
20.7% · 6.7 pts
Ammo Technician
Deploy 10 ammo stashes that are used by other marines.
20.3% · 6.8 pts
20.3% · 6.8 pts
Vindicator Veteran
Kill 250 Swarm with a Vindicator.
20.2% · 6.8 pts
20.2% · 6.8 pts
Stay Frosty
Freeze 6 Swarm with a single Freeze Grenade.
19.8% · 6.9 pts
19.8% · 6.9 pts
Bug Stomper
Kill 100 Swarm Grubs.
19.6% · 7 pts
19.6% · 7 pts
Damage Amped
Kill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission.
18.5% · 7.3 pts
18.5% · 7.3 pts
Hard Campaign
Complete the Jacob's Rest campaign on Hard difficulty or harder.
18.5% · 7.3 pts
18.5% · 7.3 pts
Small Arms Specialist
Kill 250 Swarm with PDWs.
18.4% · 7.3 pts
18.4% · 7.3 pts
Another Bughunt
Kill 5,000 Swarm.
18.2% · 7.4 pts
18.2% · 7.4 pts
Shotgun Specialist
Kill 250 Swarm with a Shotgun.
18.2% · 7.4 pts
18.2% · 7.4 pts
Static Defender
Kill 500 Swarm with deployable Sentry Guns.
18.1% · 7.4 pts
18.1% · 7.4 pts
Circuit Breaker
Complete 10 wire hacks without access being logged.
17.4% · 7.7 pts
17.4% · 7.7 pts
Peace Medic
Heal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm.
17.3% · 7.7 pts
17.3% · 7.7 pts
Hornet Barrage Expert
Kill 100 Swarm with Hornet Barrages.
17% · 7.8 pts
17% · 7.8 pts
Minigun Master
Kill 250 Swarm with a Minigun.
16.8% · 7.9 pts
16.8% · 7.9 pts
Pistols Expert
Kill 250 Swarm with Twin Pistols.
16.6% · 8 pts
16.6% · 8 pts
High Voltage Expert
Kill 250 Swarm with a Tesla Cannon.
16.4% · 8 pts
16.4% · 8 pts
Perfect
Complete a mission on Normal difficulty or harder without receiving any damage.
16.3% · 8.1 pts
16.3% · 8.1 pts
Slaughter Soldier
Kill 250 Swarm with a Chainsaw.
16.3% · 8.1 pts
16.3% · 8.1 pts
Tactical Explosives Expert
Kill 100 Swarm with Laser Tripmines.
16.2% · 8.1 pts
16.2% · 8.1 pts
Firewall Specialist
Kill 100 Swarm with Incendiary Mines.
15.9% · 8.2 pts
15.9% · 8.2 pts
Railgun Specialist
Kill 250 Swarm with a Rail Rifle.
15.9% · 8.2 pts
15.9% · 8.2 pts
Rydberg Reactor Speed Run
Complete Rydberg Reactor within 3:10 on Normal difficulty or harder without any marines dying.
15.8% · 8.3 pts
15.8% · 8.3 pts
Professional Marksman
Kill 250 Swarm with a Marksman Rifle.
15.7% · 8.3 pts
15.7% · 8.3 pts
Grenadier Expert
Kill 250 Swarm with a Grenade Launcher.
15.6% · 8.4 pts
15.6% · 8.4 pts
Insane Campaign
Awarded for finishing the Jacob campaign on Insane difficulty.
15.5% · 8.4 pts
15.5% · 8.4 pts
Cargo Elevator Speed Run
Complete Cargo Elevator within 2:50 on Normal difficulty or harder without any marines dying.
15.4% · 8.5 pts
15.4% · 8.5 pts
Hardcore
Complete any mission on Brutal difficulty with Onslaught and Hardcore Friendly Fire enabled.
15.4% · 8.5 pts
15.4% · 8.5 pts
Landing Bay Speed Run
Complete Landing Bay within 1:25 on Normal difficulty or harder without any marines dying.
15.4% · 8.5 pts
15.4% · 8.5 pts
Deima Surface Bridge Speed Run
Complete Deima Surface Bridge within 2:30 on Normal difficulty or harder without any marines dying.
15.3% · 8.5 pts
15.3% · 8.5 pts
Kill Them All
Kill 25,000 Swarm.
15.3% · 8.5 pts
15.3% · 8.5 pts
Outstanding Execution
Complete a campaign on Normal difficulty or harder without any marines dying.
15.3% · 8.5 pts
15.3% · 8.5 pts
Security Expert
Complete 10 computer hacks without access being logged.
15.3% · 8.5 pts
15.3% · 8.5 pts
Sewer Junction Speed Run
Complete Sewer Junction within 1:30 on Normal difficulty or harder without any marines dying.
15.3% · 8.5 pts
15.3% · 8.5 pts
Brutal Campaign
Awarded for finishing the Jacob campaign on Brutal difficulty.
15.2% · 8.5 pts
15.2% · 8.5 pts
SynTek Residential Speed Run
Complete SynTek Residential within 2:30 on Normal difficulty or harder without any marines dying.
15.2% · 8.5 pts
15.2% · 8.5 pts
Timor Station Speed Run
Complete Timor Station within 4:25 on Normal difficulty or harder without any marines dying.
15.2% · 8.5 pts
15.2% · 8.5 pts
Nuke From Orbit
Kill 100,000 Swarm.
15% · 8.6 pts
15% · 8.6 pts
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