Best Service, Door, Open, Garden Best Service, Fight Scene 3 Best Service, Siren, Air Raid (slowed down)/HALF-LIFE KLAXON ALARM SOUND (debut)Best Service, Thunderstorm Extreme Best Service, Train Passes By Best Service, Tropical Wood, Birds Best Service, Water Splash Dick De Benedictis Music (Used in soundtrack.)
Adrenaline Horror - Kelly Bailey
Apprehensive Short - Kelly Bailey
Bass String Short - Kelly Bailey
Dark Piano Short - Kelly Bailey
Hard Technology Rock - Kelly Bailey
Military Precision - Kelly Bailey
Nuclear Mission Jam - Kelly Bailey
Scared Confusion Short - Kelly Bailey
Sharp Fear Short - Kelly Bailey Elektra Records, Camel /Pro Sound Effects, Camel Vocalizing (Slowed down by 50%, used for the Tentacle.)Elektra Records, Pop and Explosion Hollywoodedge, M60 Automatic Multip PE233701 (Used as the firing sound of the SMG.)Paramount Walkie Talkie Static Roland, Sampling Showcase, Track 24 - Ambient Volume 1 Roland, Sampling Showcase, Track 32 - Earth FX Roland, Sampling Showcase, Track 33 - Animal FX (Slowed down by 50%, cows section used for the Gargantua.)Roland, Sampling Showcase, Track 34 - City and Traffic FX Roland, Sampling Showcase, Track 35 - Car FX Roland, Sampling Showcase, Track 36 - Home FX Roland, Sampling Showcase, Track 39 - Battle FX Roland, Sampling Showcase, Track 40 - Other FX (Used mostly for the turret.)SoundDogs, Air, Compressed, Force, Loud SoundDogs, Body Fall, Dirt, Deep, Short, Moves SoundDogs, Body Fall, Dirt, Heavy, Slow, Moves SoundDogs, Bone Break, Heavy, Hit, Short /Sound Ideas, BONE, BREAK - HEAVY, WET BONE BREAK (Slowed down by 50%, used for the gore/gib.)SoundDogs, Bone Break, Heavy, Sharp, Snap /Sound Ideas, BONE, BREAK - HEAVY BONE SNAP 03 (Slowed down by 50%, used for when a Headcrab bites the player.)SoundDogs, Bone Break, Heavy, Short, Low SoundDogs, Bone Break, Light, Flesh, Gushy SoundDogs, Bullet, Shell, Drop, Tile, Bounce SoundDogs, Cannon, Med, Big, Shot, Crack SoundDogs, Chain, Gear, Heavy, Marching, Foley SoundDogs, Dog, Pants, Close, Slow, Very Deep SoundDogs, Dog, Whimper, Pathetic SoundDogs, Door, Air, Release, Hiss, Even, Mid SoundDogs, Door, Iron, Lever, Grind, Groan, Big SoundDogs, Door, Metal, Heavy, Slide, Hit, Low SoundDogs, Door, Metal, Latch, Fast, Springy (Used when reloading the crossbow.)SoundDogs, Elevator, Door, Slide, Open, Thud SoundDogs, Equipment, Rattles, Walk, Metals SoundDogs, Explosion, Bursts, Short, Echoes SoundDogs, Explosion, Sand, Debris, Fall SoundDogs, Factory, Active, Hydraulic, Load SoundDogs, Factory, Close, Thumps, Ominous SoundDogs, Factory, Dist, Pounding, Ominous SoundDogs, Factory, Harbour, Grind, Horn SoundDogs, Factory, Steel, Buzz, Thump, Low SoundDogs, Fan, Window, Slow, Buzz, Pump SoundDogs, Feet, 3, Step, Squeak, Plant (2nd footstep, used when walking on "tile" surfaces.)SoundDogs, Feet, 4, Fast, Scuffle, Hurry SoundDogs, Feet, Boot, Dirt, Gritty, Med /Sound Ideas, FOOTSTEPS, BOOT - SHORT WALK IN BOOTS ON DIRT SoundDogs, Feet, Boots, Grit, Dirt, Damp, Walk /Sound Ideas, FOOTSTEPS, BOOT - WALK IN BOOTS ON DAMP DIRT (Used when walking on dirt surfaces.)SoundDogs, Feet, Boots, Metal, Stairs, Jog (11th footstep, used when taking fall damage.)SoundDogs, Feet, Dog, Cement, Run, Fast, Up SoundDogs, Feet, Shoe, Hard, Walk, Slide, Floor (Used when walking on "tile" surfaces.)SoundDogs, Feet, Walk, Boots, Cement, Scuff /Sound Ideas, FOOTSTEPS, BOOT - SHORT WALK AND SHUFFLE IN BOOTS ON CONCRETE (Used when walking on concrete surfaces.)SoundDogs, Fire, Ammonia, Crackle, Snap SoundDogs, Flame Thrower, Reversed SoundDogs, Glass, Pane, Break, Abrupt, Dead SoundDogs, Glass, Pane, Break, Large, Shatter SoundDogs, Glass, Pane, Large, Break, Slow SoundDogs, Gun, Hits, Rocks, Crack, Crunches SoundDogs, Gun, Machine, Fire, Long, Shells SoundDogs, Gun, Machine, M60E, Burst, Many SoundDogs, Gun, Machine, M60E, Burst, Med SoundDogs, Gun, Machine, Tinny, Shells SoundDogs, Gun, Moves, Busy, Clicks, Rattles SoundDogs, Gun, Moves, Rattles, Busy, Long SoundDogs, Gun, Trigger, Cock, Loud, Cracks (Used when cocking the shotgun.)SoundDogs, Horse, Baby, Squeal, Med, Whine SoundDogs, Horse, Baby, Whinny, Shriek SoundDogs, Horse, Breaths, Hard, Pulse, Throat SoundDogs, Hospital, ECG, Beep, Single SoundDogs, Hospital, Pump, Blood, Pressure SoundDogs, Impact, Low, Boof, Bass, Debris SoundDogs, Industry, Fan, Slow Squeaks, PEI SoundDogs, Insect, Crickets, Two, Med, Fast SoundDogs, Insect, Fly, Buzzing, Wide, Close SoundDogs, Latch, Metal, Arm, Lift, Clack, Open SoundDogs, Lock, Metal, Dial, Spin, Move, Light SoundDogs, Lock, Open, Clack, Keys, Jingle SoundDogs, Machine, Buzz, Hiss, Turn, Med SoundDogs, Machine, Crunch, Feed, Turn SoundDogs, Machine, Punch, Hard, Drop, Steel /Sound Ideas, INDUSTRY, MACHINE - INDUSTRIAL MACHINE: HUGE METAL PUNCH PRESS SoundDogs, Machine, Stamp, Bolt Drop, Feed SoundDogs, Maggots, Squirm, Wet SoundDogs, Metal, Hand Crank, Squeaky, Light SoundDogs, Metal, Hit, Bink, Hard, Reverb (Slowed down by 43.8%, used for the crowbar.)SoundDogs, Metal, Hit, Dong, Harsh, Rev SoundDogs, Metal, Hit, High-Low, Ca-Boom SoundDogs, Metal, Hit, Strike, Pierce, Harsh SoundDogs, Metal, Hit, Thunderous Reverb SoundDogs, Metal, Pipe, Hit, Debris, Messy /Sound Ideas, METAL, DROP - METAL BAR FALLING INTO OTHER METAL OBJECTS SoundDogs, Metal, Swing, Back, Forth, Creaks SoundDogs, Metal, Truck Body, Slam, Crunch SoundDogs, Mud, Suction, Air Pull, Fast SoundDogs, Mud, Suction, Air Pull, Long SoundDogs, Mud, Suction, Wet, Slurp SoundDogs, Pig, Single, Grunts, Big SoundDogs, Punch, Body, Big, Deep, Solid SoundDogs, Punch, Body, Big, Soil, Crunch, Thud SoundDogs, Punch, Body, Big, Sub, Crack, High /Sound Ideas, PUNCH, BODY - BIG BODY PUNCH AND BONE CRACK 02 SoundDogs, Punch, Body, Big, Thump, Meaty SoundDogs, Punch, Body, Light, Deep, Juicy SoundDogs, Punch, Body, Light, Leather, Grab SoundDogs, Rat, Vocals, Squeaks SoundDogs, Rats, Squeak, Active, Chirp, Scared SoundDogs, Ricochet, Heavy, Quick, Med SoundDogs, Ricochet, Sharp, Whistle, Slice SoundDogs, Ricochet, Soft, Tear, Med SoundDogs, Ricochet, Thick, Debris, Short SoundDogs, Ricochet, Tiny, Sharp, Slice SoundDogs, Ricochets, Many, Sharp, Spin SoundDogs, Rifle, Shot, 223, Loud, Punch SoundDogs, Rifle, Shots, Ext, Big, Two (2nd shot used for the shotgun.)SoundDogs, Rifle, Shots, Five, Strong, Big (First two shots used for .357 Magnum Python revolver, third shot used for 9mm Glock 17 pistol, fourth shot used for ambient rifle gunfire.)SoundDogs, Sparks, Arcing, Solid, Constant SoundDogs, Sparks, Electric, Loud, Harsh SoundDogs, Sparks, Electric, Spin, Full, Crash SoundDogs, Sparks, Explosive, Zaps, Violent SoundDogs, Stab, Big, Thump, Flesh Moves SoundDogs, Stab, Flesh, Claw Rips Thru, Slow SoundDogs, Stab, Hit, Flesh Moves, Bone Break SoundDogs, Torch, Halton, Reverbed 1 SoundDogs, TV, Monitor, Off, Crackle, Light SoundDogs, TV, Monitor, On, Crackle, Tube, Hum SoundDogs, TV, On, White Noise, Off, Room SoundDogs, Water, Fall 6', Splashy, Sewer SoundDogs, Water, Sewer, Manhole POV SoundDogs, Water, Slurps, Glub, Rubber Boot SoundDogs, Wind, Cave, Echo, Low, Agnostic SoundDogs, Wind, Cave, Echo, Moan, Agnostic SoundDogs, Wind, Heavy, Moan, Loud, Spooky SoundDogs, Wind, Int, Whistling, Horror SoundDogs, Wind, Med, Moany, Hollow, Castle SoundDogs, Wood, Crash, Shuffle, Springs, Thud SoundDogs, Wood, Large, Heavy, Snap, Violent SoundDogs, Wood, Metal, Crash, Loud, Bounce SoundDogs, Wood, Metal, Crash, Rusty, Rattle SoundDogs, Wood, Shutters, Rattles, Moves SoundDogs, Wood, Trunk, Table, 2 Slides, Heavy SoundDogs, Wood, Trunk, Table, Slide, Heavy Sound Ideas, AUTO, TIRE SQUEAL - REV UP ENGINE AND SQUEAL AWAY, SKID 03 Sound Ideas, BONE, BREAK - WET BONE BREAK 01 Sound Ideas, BONE, BREAK - WET BONE BREAK 02 Sound Ideas, BONE, BREAK - WET BONE BREAK 03 (Needs clarification.)Sound Ideas, CARTOON, SQUEAK - RESIN SQUEAK, STRETCH 01 Sound Ideas, COMPUTER, MONITOR - COMPUTER MONITOR SCREEN, SWITCH ON, OFFICE (Used when pressing some buttons.)Sound Ideas, ELECTRICITY, SPARK - HIGH VOLTAGE ARCING Sound Ideas, EXPLOSION - MEDIUM EXPLOSION 01 (Heard in a processed variant.)Sound Ideas, EXPLOSION - MEDIUM EXPLOSION 03 (Ditto.)Sound Ideas, EXPLOSION - MEDIUM EXPLOSION 04 (Ditto.)Sound Ideas, FOOTSTEPS, BOOT - WALK ON DIRT IN BOOTS, UP STEPS ONTO WOOD SIDEWALK Sound Ideas, GUN FOLEY / HANDLING - .223 COLT AR-15 ASSAULT RIFLE CHAMBERING Sound Ideas, GUN, FOLEY - LIGHT HANDLING CLICKS AND MOVEMENT OF GUN 03 Sound Ideas, GUN, MACHINE, FOLEY - MAC 10: PULL AND LOCK CHARGE HANDLE Sound Ideas, MUD, SUCTION - C.U. BIG BREATHY WET SUCTION (Used as the sound of the Bullsquid spitting.)Sound Ideas, SCI FI - FORCE FIELD AMBIENCE Sound Ideas, TIGER (PANTHERA TIGRIS) - Tiger. Siberian tiger (P.t.altaica) Cu growling and eating meat. Marwell Zoo, Hampshire, UK Unknown Cougar Sound Unknown Sound Effects Library, Shotgun Shells Falling Unknown Sound Effects Library, Small Fire Whoosh (Used as part of the Gargantua's fire attack.)Valve Crowd Cheering Sound Valve Item Pick-up Sound (debut)Valve User Interface Sounds (debut)Zero-G, Cuckooland Unhinged, Track 94 - Non Drum Percussion (Used for the doors, and the crowbar.)