Oh, okay, I think I know where you are talking about. Were you trying top jump on the same wall? The idea we had in mind was to use both walls, so you cannot gain height only with one wall. If you were trying with both walls, we will try to make it easier to use. If you were trying to use only one, we should probably make it more clear that you need to use both. In any case, thank you for your feedback!
About the foreground objects, you are right, there are some places which are a bit occluded.