For this achievement you need to complete the whiplash course on the Goat Z map with out falling. To make it easier for you I would recommend spawning before the outbreak. Now this course is basically a total wipeout course, it is located at the port and the start of the course is a the top of the stairs. The actual course is really easy except for the first and last spinning wheel. As a tip for the first spinning wheel I made sure to jump when one of the pads was at the top of the screen and that seemed to make me die the least times, and for the last one try to stay at the edge of the pads as much as you can as some of the area can't be reached by the spinning pillar.
*edit credit timmie271 and Dwaggienite This achievement can be done in slow motion and is strongly recommended to be done with this as it makes it much easier
Please note that this achievement is a lot about luck and timing, it may take you a few attempts before completing it but you will get there in the end but if you would like to see a video guide for this I have included my guide below.