The Valve ammo pack sound effect is old.

Half-Life 2 : Strider sounds - Half Life 2 - Strider Sounds How Half-Life 2 Strider sounds were created... Garry's Mod strider walk Half-Life 2 - Strider Sounds patrick that's a fast headcrab Reef blower but with half life sound effects He's Gonna Welcome to City 89701000 (Half Life in real life) Half-Life: OVERWORLD - The Combine World Animation Lego Half life 2 Strider test Half-Life: The Lore Behind Striders Jay Benson Strider Vs Vortigaunt doodle Half Life 2 Strider Sounds Where titan speaker man sounds come from New Strider Sounds (Half-Life: Alyx) Half Life Alyx - First 2 Strider Encounters HL2 Strider in Real Life Why Striders shouldn't get subtitles Half Life 2 Episode 2 Hunter sounds Half life 2 strider sound DOG vs Strider [S2FM] Striders two striders Half-Life 2 Beta Stalker screams (all of them)