Hello Acid_Reflvx , I am sorry to say your map is being rejected.
Theme: The arcade-style theme as said above has been rather overdone in general, but we do also already have a donkey kong map.
Build: The build lacks, it doesn’t look much like the original machine and the block palette used was a bit plain. The donkey kong on the inside was a bit disappointing I must say.
Parkour: The parkour was odd, the route it took was very up and down, and, really, there wasn’t much actual parkour at all, it was mostly outshone by the strange combination of barrier maze/ droppers/ piston slime jumps (which, aren't actually allowed in mapmaking on manacube). The floating jumps at the start were rather unattractive and messily laid out and blocked the actual build.
Difficulty: The difficulty was okay for a medium in the parts that had regulation parkour, but overall the addition of the maze and droppers made it rather irritating overall, and not suitable for a medium.
I would suggest before submitting a map in future you read through this post :)
https://manacube.com/threads/must-read-map-submission-information-format.649/
Thanks for taking the time to submit your map, hopefully, you will submit more in the future!
Have a good day, and happy map building- Cele <3