The Fault One Zero Add-on for Trials Fusion has 5 achievements worth 250 gamerscore.
Complete the 'Shutdown' challenge whilst wearing the new DarkLynx helmet
Pass all the Trials tracks on Fault One Zero with the rabbit
Complete the 'Testing Ground' challenge whilst wearing the full level 3 BioTech outfit
Find all 3 squirrels on Fault One Zero
Pass all tracks on Fault One Zero