Hey,
so I know for some the issue exists that you cannot launch the game without this error:

Let me explain what that means. Windows Defender stopped the game exe from launching and that has multiple reasons:

- First and most importantly, the games exe isn't signed; Why isn't it signed? Because that actually costs a lot of money, every year, and I'm not having that in my budget for a free hobby game. Especially not pre release for a demo.

- Secondly, the game and it's exe are completely new and unknown to Windows, it doesn't know what it is and has barely ever seen it so it doesn't trust it
To fix this error you have to exlude your steam folder, or just the games folder/exe from windows defender, so it lets you launch it.

I know this seems sus, but I cannot fix it right now other than paying lots of money...
I'm sorry.

Edit:
Another way to get around this is:
Right click the game in your list -> properties -> installed files (on the left) -> browse

Your explorer will now open the folder with the healingfordummies.exe
Right click the exe -> properties -> check unblock at the bottom -> apply


I know this is annoying right now, I hope this solves itself after a while when Windows realises that this isn't a threat.