Hoi Biaino,
Sorry to tell you that your map have been rejected.
The theme is original (Even if it's really odd imo), the build however is not really good, it's pretty plain and not really attractive, try to add more detail on your builds next time, it's also a bit messy, try to build your parkour on/in a main build. The parkour is also not really good, it's a bit varied, but still repetitive, I will agree for a hard, because it's pretty long and some jumps are really hard, but the difficulty is pretty unbalanced in your map, some parts are really easy (The Inside part) when some are experts difficulty (The glass panes outside), be careful next time !
Thanks for submitting your map, would be really good to see more maps from you !