Hi KillerS! Today I am showing how to install LaD correctly!!
First: download Lad and extract lad folder into your Half-Life folder. should be like
C:/Program Files (x86)/Steam/steamapps/common/Half-Life
How to open without using the Steam library.
Now, create a shortcut of hl.exe. It should be in your Half-Life folder. Then, right click on it, then go to Properties and in "Target:", add a space and write -game lad
Then everytime you want to play lad open by that shortcut.
How to open using the Steam library.
Just restart Steam, and you should see "Lost and Dead in your library!