Here is the full list of all 21 Turbo Kid achievements.
Defeat Becca
Stockpile 5,000 Scraps
Crash 50 times while riding your bike
Defeat Silver Ghost
Defeat Oozinator
Defeat the Preacher
Gain all rewards in the Lightning Dome
Bad ending
Get the good ending
Have all NPCs witness you leaving Middle Waste
Get all bike mini-games rewards
Unlock all teleport pads
Unlock all NPCs and Zones in the notebook
Kill 100 enemies by throwing heads
Get 100% completion rate
Get 5000 points in a single bike trick combo
Have a feline interaction
Block the TV screen from its most faithful viewer
Toy with someone's feelings
Steal the spotlight from the Queen
Get all achievements