UPDATE: THIS IS A REUPLOAD OF MY THE SAME COLLECTION; THIS TIME WITH WORKING PLAYER MODELS! This is a collection of all known official Valve/Gearbox made Half-Life Deathmatch content that isn't included in the official Steam version of Half-Life. Credits: Valve/Gearbox (All original content), HL Improvement Team (PS2 based DM Playermodels/Ivan the Space Biker model), Ryan Finnie (Half-Life: Further Data original upload), BS2PC Github Devs (PS2 Map Conversion tool), Revenant100 (dm_office from Half-Life: Dreamcast mod), Mark Laidlaw (dm_cloister17 original map), MarphitimusBlackimus and Alles_Ratten (dm_cloister17 upload and fix)
UPDATE: THIS IS A REUPLOAD OF MY THE SAME COLLECTION; THIS TIME WITH WORKING PLAYER MODELS! (No longer contains Sven Coop models)
This is a collection of all currently known official Valve/Gearbox developed Half-Life Deathmatch content that isn't included in the official Steam release of Half-Life. Credits in Summary, I apologize if I've forgotten anyone. (Basically a combination of my previous HLDM uploads plus more) Most content likely is compatible with Half-Life: Opposing Force and some Half-Life mods as well.
Including Maps, Player Models, and Sprays from Half-Life: Further Data, Half-Life Dreamcast port (DC), Half-Life Playstation 2 port (PS2), Half-Life Alpha, and Mark Laidlaw's official HLDM map from the HL2 WC mappack.
Disclaimer: I take no credit for developing or being the original uploader of any of this content.
Readme file contains installation instructions.
Half-Life Further Data; maps: xen_dm, thehill, team9, rustmill, doublecross. models: ken, tmcm, skeleton, cannibal. Sprays: various
Half-Life Dreamcast; map: dm_office (early version of "Office" from Playstation 2 port)
Half-Life Playstation 2 Head-To-Head; maps: basement, datacore2, debris, office, signal, skirmish, snark_pit2, stalkyard2, water_canal, waypoint. models: Gordon (PS2), Barney (PS2), Gina (PS2), Colette (PS2), Scientist (PS2), Soldier (PS2), Gman (PS2), Zombie, (PS2), Robo (PS2), Recon (PS2), Helmet (PS2)
Half-Life Alpha; map: warez_dm (early version of stalkyard map from HLDM, contains no weapon placements on map). model: Ivan the Space Biker
Bonus map; dm_cloister17 (Developed by Mark Laidlaw from Valve for HLDM in 1999, "Cloister" was never officially released, Uploaded and fixed by MarphitimusBlackimus/Marphy Black/Revenant100 and Alles_Ratten)
Bonus models; dm_santa, dm_pumpkin. (Official Valve made HLDM player models of unknown origin. Credit to gamebanana users for original uploads)
Sources: Combine Overwiki/Half-Life Wikia Page. MarphitimusBlackimus's Youtube Channel. Various.