Didn't manage to complete this one as I managed to fall off the world by jumping all the way off the left of Dimension 1 ;_;
I did think the idea of looking for clues was good though, that kept me exploring for a good while trying to apply the secrets I found.
An indicator to tell me what dimension I'm currently in would be handy, it was a little hard to keep track of while also trying to remember the clues. Also the camera felt a bit odd. Maybe the damping or the lookahead is too much?
Congrats on starting out with game dev though! I hope you continue working hard on learning Unity.