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