Simple play each of the 4 new challenges and get at least 1 gear in all 4 to unlock this achievement. There are 3 wing suit courses and 1 wing suit combat challenge to complete.The 3 wing suit courses within this DLC can be completed real easily with this trick
For starters, run through the course to get a feel for where the rings are positioned. This will come in handy in a second. Now restart the course. You have two options.
Option 1: Run through the course as best as you can. You don't have to be perfect. On the last ring, which is green, do not fly through the ring. Instead fly around using your thrust to keep you a float and your points will slowly clock up. Do this until you have 5 gears. Now be careful
with this option as you may now lose track of where the course was and if you stray to far you only have 10 seconds to get back on track. You don't have to finish the course either. Slam into the ship when you have 5 gears and it still counts.
Option 2: This option will take a lot longer but is a lot safer. Do not fly through any rings. Simply fly around using you thrust until you have 5 gears. Using the rings as a guide for where the course is, so not to lose track of where you are. Again slam into the ship when you have 5 gears and it still counts.
Take you pick and congratulations on a easy achievement