Here is the full list of all 20 LocoCycle achievements.
Took no damage during a whole level.
Took out a Big Arms car using only melee.
Beat a tanker truck sequence in less than 60 seconds.
Unlocked all film bonus content.
Unlocked all bonus content.
Unlocked all game bonus content.
Finished Final Level.
Finished Neighborly Farmlands.
Combo streak reached 1,000.
Maxed level up on all weapons and abilities.
Blew up 200 civilian cars.
Finished Bi-Polar Offroads.
Finished Cruisin' Keys.
Countered 150 total enemies.
Finished Hidden Canyons.
Combo streak reached 250.
Finished El Highway.
Countered 50 total enemies.
Blew up Leaper Agent's car before he reached you.
Finished Prologue.