Hello misterweber,
I am here to inform you that this course is being rejected. To begin with, the build is okay but the theme isn't very original. There is already a piston map in parkour. The parkour is very repetitive and isn't very fun or interesting to do. This is caused by the fact that there isn't much jump variation. Lastly, you say that the difficulty is hard. However, the course is too long for a hard but also too easy for a hard. I do really appreciate that you obviously must have put a lot of time into this course if you consider its size :)
Thank you for submitting this course! I hope to see more from you in the future! :)
If you have any questions, you can PM me on here, in game, or on discord
-Ashley (ThePKFish, fishy1980)