Thank you for reporting those issues.
If you were playing an old version and kept the save files that could happen, but if you're playing a new game in v0.5...
Would you mind to take some screenshots and post em at the discord server?
Maybe, but most of what I said is soft locks, you won't be able to see them on a screenshot ^^'
Also, I did manage to get to the last level, but I had to start a new save. So it seems something on the mirror menu screws it up.
I am on 0.5 and... Where's the gallery? Is it something I unlock? If so, how? I beat 3 levels and nothing happened afterwards.