those are nice solutions, but try it now.
note: I didn't have time to extensively check this for backroutes sorry. In any case this level has turned out to be great for challenges and inspiration. by other people too apparently.
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interesting about Scale that wall. I still have to try your solution minimac.
I don't think I would really call this level flawed with 'backroutes' though. I think these solutions are much harder technically and somewhat harder to see than the intended. I said this in another thread but I think the game designer may have intentionally left other possible routes in for 'further play enjoyment'. (I know I would do that if I was a game designer, anyway)
Especially because some of them in other levels are ridiculously easy to see. (Goonies)