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