If you have the quest and you want to get better with a mix of room scale and stick moving, check out time stall. It is one of my favorite casual games and you have a lot of space to play in.
As for this mod, the idea of portal 2 in vr is a dream come true but it seems the mod still has a long way to go. atm headset automation is just mouse look, so 3DoF + stick to move. 3DoF is SUPER disorienting. I refuse to use the youtube app because of that. I will use other players or I will rip the video from you tube and play it in programs like skybox.