This is like the complete version's little brother: everything is the same, but - without the alternate soundtracks.
HOW TO USE THE MOD (stereo FX support required!):
1) Extract archive.
2) Rename the file Q2HM.pak into pak9.pak and place it into the 'baseq2' directory,
which is inside your Quake II folder. That's it. You're all set for the SFX part of
3) Play the game!
If so happens, that you already have a pak9.pak inside your 'baseq2' folder - then use any
other number between 9 and 99 - but it has to be higher than whatever you have inside 'baseq2'.
If you're playing Ground Zero or The Reckoning mission packs - then you need to copy this file into baseq2\xatrix and baseq2\rogue directories as well. Otherwise, mission pack's new weapon sounds will not work.