I unzipped the zip file first and then started the game.
I use Windows 7 Prof. 64 bit with SP1.
I can see a monster in the game that comes towards me and that I can push back briefly with my torch.
But I only see the "invisible" monster when it kills me.
Before that I see and hear nothing of it.
I deleted the game now, so for a screen-recording i had to download it again.
I´ll try it again and see if i can record it.