My feelings:
1. NF. -5 for rating. Remove it. NF makes bunch of nabs struggle on first part. Also it is useless waste of time.
Mind that:
a) If map Solo/Race? Then put NF or what u want.
b) If map needs iteraction between tees? Dont make solo NF.
Because all those ppl came for iteraction gameplay, if they wanted solo they would come solo.
c) Don't want play with noobs / random players? Use /team.
NF is contempt to players. Discrespect, caused by place timewasters on a map.
2. Gameplay (+- sometimes good sometimes bad).
Part 8 is skippable. Moreover, it has some bad gameplay like "go forward, grab something, then go backward, then go forward again". Timewasters. Strongly recomend to remove it or exchange with something, that doesn't need "forward-back-forward-back-repeat" mechanics. U can put this laser simply on the ground and it will be 100 times better, than dat loops.
Rule n1 - players must move all time forward. Otherwise it always bad thing. There are no opposite examples on the whole ddnet.
Pros.
At all, map has good average speed on conditions of speedrun.
Cons.
Unplayable because NF.
If u want to save NF in case you very like it, just put it in a middle of the map by teles or something.

(It will be timewaster too, that is a bad thing, but not so annoying like on start).
If i could make it for first try, my mate could make it for 5 tries. Or vice versa.
Anyway one waiting another. It wastes of players life time.
If u want to produce highrated masterpiece maps, like sickcunt does, u should think about that:
"Avoid making players having to wait."
If ur map contains 3 sec of waiting at all for one or another tee - your map is blah. Teeworlds isn't an idle clicker. U have to realize that fact.
U can notice that "other mappers do the same", but they all wrong.