Looks like a neat map! Too bad I suck at puzzles
Do you have a version with only the parkour (it's of course ok if you don't, no worries :P)?
What I did was join the game and press the button with nothing happening. I looked behind and saw a piece of redstone dust which didn't connect to anything. Under that was a bunch of player heads and the special thanks.
I started by a sign that said continue, but it didn't do anything.
Pro Tip: Leave the player where the player should start. When playing the map I was confused on what to do.
Looks cool, I'm gonna give it a try