Succesfully ended this mod after 6 hours of playing and finding 17/22 secrets. Time for a verdict...
I liked this mod very much, it was the first mod for LOG2 that I played, and I admire the author for his excellent and _quick_ work! To build such an extensive mod within a couple of weeks after the original game came out is an achievement on its own. But apart from this speed Princes of Pale Moon was real fun to play. It has an excellent story (although a tiny bit too much notes and text at times), no real flaws, good atmosphere (loved the rat and the forest!) and some epic fights. The Prince Alric bossfight was the toughest by far. I found out you are supposed to chicken out this fight at first, but i guess no-one does

The puzzles are quite simple, so it's really a get in/kill all kind of game. I rate Princes of Pale Moon 8/10, good fun!
One minor drawback for me was that some areas and fights were _really_ slow, I played it on a laptop with a 1 gb graphical card. So fast hardware is needed.