Change From Release to Debug

Debugging Unity Games · dnSpyEx/dnSpy WikiGitHub

Find the version of Unity in use. Download Unity version x from https://unity3d.com/get-unity/download/archive Install Replace UnityPlayer.dll and WinPixEventRuntime.dll in the game directory with the copies found at C:\Program Files\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport\Variations\win64_development_il2cpp