Here is the full list of all 9 Ultimate Booster Experience achievements.
Get yourself a bottle from below.
Destroy all Nevrosa billboards in the city location.
Walk of the crane with bungee rope.
Use trap door at least once.
Jump off the swing in any location before it crushes.
Ride Ultimate Booster ten times in any location.
Ride Ultimate Booster till the end at least one time in the Canyon scene.
Ride the eagle at least one time
Ride Ultimate Booster till the end at least one time in the City scene.