what should happen for the 2nd subroom (or more) is you go into the like the city or something idk lmfao and u like search around buildings for a paper plane, then you go back to walter, and he declines it because he wants a better one so u go to like a mechanic guy thing who like enhances the paper plane and makes it better, then u give it to walter and he gives u his "food", then as u are heading from the forest to the city, you start hallucinating and then you faint, go into a dream where u fight walters evil twin (who has opposite colour clothing and that recnet picture thats in the description as his face, but the picture has like a red tint) and he knocks u into a different dimension, where u find karl and he gives u plot armor and then u kill his evil twin and he turns into fall guy with shotgun and he shoots you in the face, then you go back to the real world where you then go to therapy, and then after that u get sniped from some random guy far away with a sniper and then its the credits scene