Hello Crieleke,
Unfortunately, I will be
Rejecting your map.
There isn't really a main theme for this map. In the future, try to pick a theme, then create a build relevant to that theme to incorporate the parkour into the build. You can refer to the document in this thread -
https://manacube.com/threads/parkour-list-with-theme.20194/ to make sure your map idea is original.
The parkour has some variety, but it did feel a bit repetitive at times. I did like how you used the blocks in different ways to create different styles of jumps, but I would recommend experimenting with a wider variety of blocks and items when creating jumps, as this will make your map overall more enjoyable to complete.
The difficulty is good for a medium, but the length is better for an easy map. Please read over this thread -
https://manacube.com/threads/must-read-map-submission-information-format.649/ to make sure your map fits within the requirements.
Thanks for submitting your map! I hope to see more maps from you in the future.