Turn off the lights in Wheels of Steel and finish the track in the dark.
Beat the Stonehenge track on the Tandem bike with zero faults.
Find the Diamond Squirrel collectible.
Perform a 100 meter wheelie on any career track.
Get Grade B or better on all Diploma and Graduation tracks.
Fly through all the fire rings, and reach the remote island in the Wingman track.
Win a Stadium Final without ever losing 1st place during the races.
Perform a 10 second endo on any career track.
Jump through the ring of fire in the Braking Bad track.
Perform a slam dunk on Ever, Everer, Everest.
Find the hidden moose in the UK Upper track.
Perform 7 flips in one jump, and land successfully.
Finish a track with zero faults without leaning.
Get Grade A+ on all the University of Trials tracks.
Beat any Hard track with the Helium with zero faults.
Unlock all the sponsors.
Perform a 10 second wheelie on top of the portable toilet in the Inferno V track.
Get a Gold medal or better on all career tracks.
Get a Gold medal or better on all Skill Game tracks.
Beat all the Stadium Finals in Sixty Six
Get a Gold medal or better in all the career tracks from Sixty Six, including Extreme tracks
Reach Fame level 50.
Travel 15 miles through the Sixty Six tracks
Beat all the Stadium Finals in Crash & Sunburn
Get a Gold medal or better in all the career tracks from Crash & Sunburn, including Extreme tracks
Find your first Squirrel collectible.
Get your first Platinum medal on a track.
Beat all the Stadium Finals.
Land on the stretchers in the UK Up track.
Beat any of the Monster Mash races using the Squid.
This game contains additional secret achievements. These currently cannot be retrieved from Stadia.