It definitely needs some polish I agree, I really tried to achieve more than I should've for my second game dev project ever but I'm just glad I made something mostly playable. In regards to the rooms being too big I agree and it was a glaring issue I saw as well but I was in too deep to fix it. And in regards to UI I have no clue what Im doing so I should spend more time on that in the future.
And not having a collision or at least death box on the train area was something I didnt think of but I will try to keep that stuff in mind more so thank you for that heads up.
Thank you for taking the time to try it out though!