https://bugs.winehq.org/show_bug.cgi?id=54067
--- Comment #4 from Matheus matheus.venturini@acad.ufsm.br --- Created attachment 73870 --> https://bugs.winehq.org/attachment.cgi?id=73870 Save files for the demo that allows the issue to be tested
The save files in this zip already have the second level unlocked (the one with the vending machine). Extract them in the directory with ULTRAKILL.exe, launch the game then select "Continue" -> "Violent" -> "Prelude" -> "0-2: The Meatgrinder"
There's a possibility this could be caused by the game being made on Unity, but I'm not sure if it's really the same issue as https://bugs.winehq.org/show_bug.cgi?id=42631