Nice exploration-puzzle game! The puzzles were a bit on the easy side for someone familiar with this genre, but not bad overall.
The only thing I really got stuck on was finding the gold key, finally had to check the video for that one. As far as I know there wasn't any in-game clue that I should bring that item to that character, since another character already provided some of the information needed.
I think the inventory should show a name for each item, as it wasn't entirely obvious for some items. But I liked how you integrated hints into the character dialogues.
I wish there were a way to speed up the dialogue without accidentally skipping it, there were a few lines I missed because of this.
The last part of the game felt both a little rushed and overly drawn-out. I think a last series of puzzles to get the gold orb would be more satisfying. The final scene felt a bit too wordy but it was a fun idea to "break the fourth wall" like that.