Getting through the solution in this level in this quick of time can be tough so it will probably take you several tries. You're going to have to make each move really fast and without making any mistakes. Your run will have to basically be flawless so if you happen to make a wrong turn or slow down for a second, don't bother continuing and just restart the puzzle because you won't make it in time. Even if you do everything perfectly you'll still just be finishing at 18 seconds. Here is the solution I used and the fastest I've seen.