The source code is on my GitLab repository (fr) , but it's not exemplary: it's GamJam code and it was my first use of Adventuron.
I'll put hints as you suggest.Did you get stuck after going into the tower or before?
before. I noticed something was stuck in the letter box too but didn't know how to look at it.
You don't need what's stuck right away, but the memo note might help you.