I really like the parkour. You've done a wonderful job
There's just a few things I would suggest you change.
Firstly, when you are first introduced to the red blocks, I had NO clue where to go. So at the very start of the parkour, I would suggest adding an index of what blocks mean what. (You could have a room above the first stage with a welcome sign and the index. Then a hole in the middle and you drop down to start the parkour)
At this area in the parkour:
http://imgur.com/nBWQpYv the very last jump seems like a bit of a troll. You finally get to the end of the stage and you jump the last jump... Then BOOM! You hit your head. Tbh it's just a bit trolly. So I would suggest raising the barrier blocks above it by one block (Only at that area.)
And lastly. This is a very, VERY small thing. But in my opinion, glowstone is a very ugly textured block. And right at the end of the map before you go down the shute to the end room, there are two glowstone blocks either side of you. I think that sea lanterns would go allot better with the quartz theme.
Once you have added these things, it will be accepted
So please PM me once they're changed and I will send it off to Zainos
Well done.