uses DiamonD pack and hidef textures found on here.
Half-Life Deathmatch: Improved is a mod aimed towards making The Original HLDM Hi-DEf using hidef textures
and DiamonD Pack im sure you will like this and includes new blood
Extract The folder HLDM to your steams half-life directory probably this directory
C:/Program Files (x86)/Steam/steamapps/"your email you used for your steam account"/half-life
Gamebanana users that i got content from "to whom i give full credit for the content that i got from them"
Credits for epic hidefness:
v0.2 might use sprit of half-life! look out for updates!