In the interest of making as much of a one-stop-shop as possible apart from collectibles, I've compiled all 28 achievements that aren't related to the two big sets of collectibles into one video.
For Tony Goat, after dragging the boulder in front of the car doing donuts to get Dodge This, just head over to the far fenceline. Activate slow-mo, then start a manual by pressing
. With slow-mo active it should be relatively easy to keep the manual going until you hit 3,000 points. Once you do, jump to end/land it and unlock Tony Goat.
This achievement can be seen starting at the
03:31 mark in the video below.