Rld.dll is a DLL library that is used in many games. The absence of this library is often the reason for the error and failure of the game to start. This library may be used to verify the authenticity of the game, so the original file is often replaced by a broken one during the "treatment" of the game. Antiviruses are not always friendly with quacks, so they often delete a new (spoofed) file. As a result, there is no original or broken file left.
The first thing you can advise in this situation is to reinstall the quack by turning off the antivirus beforehand. Or, if the game is "cured" by default, then reinstall the game, again without the antivirus turned on. These are the basics of working with crackers, but many people ignore these rules. The second option is to manually copy the Rld.dll file to the game folder. This method does work, unlike other DLLs. But there is one question to be solved: where do you download this file from? You can download different sizes of Rld.dll files in different sources, and therefore the content of the library Rld.dll. You can try different options, but it is best to take the file from your game distribution or quack to it.
For the record:
Do not be light-hearted about using quacks for games, because they can be infected. Writers often use crackers to spread Trojans, botnets and similar viruses. DLLs, in turn, are easy to infect, as the content of the DLLs does not differ from that of EXE files. By turning off the antivirus when installing the game, you put yourself at risk of infection.