I don't have op4 installed so I didn't have some textures.
1. Just a small error with the side of the ladder here, fill it with red like your other one.
Bad construction here! You should make your hollow cylinders manually and sticking to the grid to avoid this. :smile:
Tiny gap between the rocks when you're in the area behind the waterfall.
The water texture on the back of your waterfall is scrolling sidewards. :smile:
Most of the stuff I was going to mention already has been. Enjoy your lan gmaes. :smile: