Only a 50% puzzle
E.g. I just spent 30 minutes trying to jump over an electric train track; It doesn't work for me even after watching the walkthrough.
This has nothing to do with solving the puzzle and it's pretty boring trying to do this for an half hour espescially when you had plenty of repeating in the previous chapters.
Now I'm stuck and I don't want to finish the game anymore: to aggrevating.
I had bought the game 6 months ago and progressed play bit by bit for these reasons, but now I'm simply fed up.
It started exciting but ended up to be boring.
I like puzzles a lot, however I will not buy a similar game if it has the same kind of setup.