Hi Vedor, thanks for feedback, really helpful. I opened the comment section at Rogue of 5 now.
The stairs are a bit weird regarding the keys plus I am operating from a German keyboard, maybe try backslash and shift+backslash. I'll fix it in a second to make it clearer and use a non-symbol key (like "a").
Does the game crash upon exiting from the main menu or from the dungeon to the main menu?
THX and best regards, Jan