Woah-woah-woah!! I can't believe this is your very first stickman animation... this is really cool!
I liked the ideas, the movements, and the whole animation itself! This was really cute and interesting, I really wanted to see more and more while I was watching it. :)
You animated it really well, though you can work a bit on the landing, because I don't think that if you would land in hands, you would keep your arms completely straight, I think people would bend them a bit. The animation would look a bit more dynamic this way.
Anyways, I really enjoyed it, the ideas of the parkour and the ideas of the levels were really cool!
I also liked the part when the stickman was jumping on the trampoline, and the sound effects weren't bad either (though the stepping and landing ones could be a bit more quiet or realistic).
So, keep up the good work!