Ahh, .rar files are the annoying extra step that nobody likes taking...
Starting out, there's random junk on the ground...so...okay.
Aaaaaand it's one of those maps where you have to make a perfect arrow boost shot every multiple times in a row or you'll have to start a copy again, take the stuff from the chest again, and try again...and repeat ad nauseum.
And that's where I stopped caring. I decided to "play" through the rest in creative mode. It's little more than big rooms with mob spawners in them and little else, which uses that as "difficulty." Yawn.