Add the "valve_russian" folder to C:\Program Files (x86)\Steam\steamapps\common\Half-Life or your custom path to HL. In the HL properties on Steam, change the game language to Russian.

Дадайце папку "valve_russian" у C:\Program Files (x86)\Steam\steamapps\common\Half-Life або свой уласны шлях да HL. Ва ўласцівасцях HL у Steam змяніце мову гульні на рускую.