Here is an experimental build of Half-Life: Source, based on Half-Life 2 Leak, that was stolen in 2003 year. You can see new updates from original Half-Life: Source, meaning Half-Life: Source Fixed stuff, that were ported to Half-Life: Source 2003 version. Just have a look at the video and you will all understand.
Gameplay video.
How To Install.
Download "Half-Life Source 2003.rar" archive in provided above link.
Once it is finished downloading, open this "Half-Life Source 2003.rar" archive with WinRAR program.
You will see 2 folders in this "Half-Life Source 2003.rar" archive.
One is called "C++", the second ones "Game".
If you would like just to play the game - double left-click on "Game" folder.
You will see here "anon-hl2" folder.
Extract it, for example, to your Desktop.
Go to extracted to your Desktop "anon-hl2" folder.
Double left-click on it.
You will see here batch executable file, called "hl1.bat".
Double left-click on it.
Play.
this is bad.