Here is the full list of all 12 Jacktus Green: The Fluffy, the Spiky and the Spicy achievements.
Defeat 10 enemies of the gang.
Pick up your first golden avocado.
Derail your first minecart.
Pick up 300 gold nuggets.
Beat the game without taking damage.
Defeat Guindilla for the first time.
Defeat Guindilla a second time.
Defeat Guindilla for the last time.
Complete the tutorial.
Defeat 50 enemies of the gang.
Defeat 120 enemies of the gang.
Shields up.