I am 100% sure ive extracted it correctly. I'd give the command prompt thing a try if I knew how to do that.
Create a new text file inside the folder you extracted the game in, name it however you want, then open it and paste this:
"Deltarune Lightners Live Plus.exe" --rendering-driver opengl3
change the file extension from ".txt" to ".bat".
Now open the ".bat" file and enjoy the game.
