Hello Fautical,
Unfortunately, I will be Rejecting your map.
The theme is somewhat original, there are a couple of similar maps (Western - Hard for example) but none exactly like this.
The build isn't bad, it is a bit small, so I would suggest possibly making it a bit bigger so you can fit some more details in, however you did add some nice details which make it an accurate build.
The parkour is a bit repetitive, especially near the beginning. You did use a few different styles of jumps throughout the map, however you did group a lot of the jumps. What I mean by this, is that you would have a sequence of just normal block jumps, then just ladders etc. Try to mix up your jumps a bit more throughout your map, as well as possibly experimenting with a larger variety of blocks and items, this will make your map overall more enjoyable to complete.
You did implement the parkour into the build well, with little to no floating jumps, which is good.
There were a couple of minor skips throughout your map, these can be fixed by a map judge if your map gets accepted, however it's still something to be careful of.
The difficulty is good for an easy map, but the length is more suited to a medium map.
Thanks for submitting your map! I hope to see more maps from you in the future.