I haven't :(. It took me several tries to download the demo so I'm hoping (lol) you can give me the unityplayer.dll file and the game will work. In case after re-downloading it the unityplayer.dll file is still not there, but I'll try re-downloading if you can't!
try this link: https://drive.google.com/file/d/1q6kl9Jv-_QtYeu09sB0kgdv31ALFl_ga/view?usp=shari...
if this doesn't work, i'm afraid you have to redownload the demo from the site.