Greetings,

While playing The Cemetery stage 2 I found the secret lever. I was able to reactivate it multiple times. This had no adverse effects on gameplay but when I reached the end of the level I found my secrets counter was "12/1" I have not checked if this is a repeatable bug but will update the post if/when I go back to that level.

Didn't notice there was an update! Thank you.

It's at the moment only available in GOG Galaxy because it was released in the evening on Friday when GOG already called it a day. Offline installers should be available on Monday or so I guess.