That map, despite being quite simple and featuring tricky obstacles, favours competition due to its relatively short length. I've hosted it today on my server, and three out of the four players have managed to finish it. On overall aspects, it's a cool one to practice at.

About the gameplay that was posted, the path I've discovered differs from yours in the movie in a few moments. Firstly, it's possible to double off the start platform and get past the 1-block-wide passage without even touching the unhookable wall below it. Also, on the finish, it's possible to reach the final platforms either with a single grenade and a hook (which requires some luck) or the easy way out, a double with an optional hook. With my current strategies, the high score on this map was 19.6.