Just tested this locally. I really like the flow of running around, various speedjumps one can use and how organic the brushes are made!
For the second flag I feel like it's barely visible how you are supposed to get up there. Given how uniformly the area is lit, you can't really see the slope on the left or the small ramp further away. Once you know the trick, it's not too hard. But I think this could be made more visible, by improving the lighting, changing the texture of that face or something else.
In the lower part, I think that red arc should be clipped off or you easily get stuck there, especially on the right side.
Also, that one part out there looks like a ladder, except that it's missing the required surface flag. That's counter-intuitive compared to most other maps.