Hey friend! I’m not super familiar with the 2D stuff, but fullscreen mode is F4 if you want to try it out. Oh, and right now it’s set to 1280x720 (F4 also adjusts it to higher resolutions). 😊
Just to clarify: in the game, the scenes and visuals are in 3D, and the 2D part kicks in when you're moving around and interacting with the map and characters :)
If you have any other questions, I will be glad to help you.