Hey Strail,
I'm sorry to have to tell you that your map has been REJECTED. The theme isn't incredibly original, as have a "Ghosts" map that falls under the same theme as yours. But, both builds are very different. so the theme is excusable The main issues lie in with the build and the parkour. The build is not very good at all. It's a huge sphere of wool with little to no detailing in the interior and exterior. It lacks creativity and attractiveness. The parkour is way way too long for the hard difficulty, you have to cut back on a couple of jumps. But, it's hard enough for the difficulty. The variation of the parkour is not very good at all. There were multiple segments of just ladders of just jumping from slab to slab. You need to be creative when making parkour and use a variety of jumps/blocks so that it doesn't feel repetitive. I hope you take these criticisms into account with your future submissions, good luck!