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