The game must modify the file path of lumaemu.ini. After finding the lumaemu.ini file in the root directory of the game, open lumaemu.ini with notepad and put it inside.
For example, change the following to: SteamClientDll =X:\Prototype.
2\steamclient.dll, and then start the game, that is to say, add the address of the file lumaemu.ini after SteamClientDll =. For example, the location where I downloaded and unzipped the lumaemu.ini file shows F:\ cruel prototype 2 \ prototype.2.hc.incl.chs.green.edition-Ali 213 \ prototype 2. Add this, 100% and run it again. I was depressed for several days!