"So if your game fails for some reason or has a bug fix that works for everything, all you have to do is take the steps and it will be fixed.

1. -> First of all delete your Half-Life folder (please let the folder delete only the contents of the folder)
2. -> Download "steamcmd", here the link to download : https://steamcdn-a.akamaihd.net/client/installer/steamcmd.zip
3. -> Create a folder named "steamcmd" and put the steamcmd file into it.
4. -> Now write down the following command and copy-paste and press "Enter" to execute the command.
5. -> start "steamcmd", and write the commands relationally execute the commands as I have written them
-> login anonymous [It may not be accepted the first time, just try spamming 5-10 times]
-> force_install_dir ./cs/ [It may not be accepted the first time, just try spamming 5-10 times]
-> app_update 90 validate [It may not be accepted the first time, just try spamming 5-10 times]
6. -> If you have everything, write "exit" at the end [It may not be accepted the first time, just try spamming 5-10 times]
7. -> You move the folder where 1.6 has been downloaded (you can easily tell from the data which one it is) at your folder "Half-Life".
8. -> Go to your library & press 1.6 then right click and click Verify Integrity of Game Files"

Now it should work without the bug, have fun
btw. on Linux it all goes relatively similar simply just write "steamcmd download" and you will find it
Thx :)"