Completing Jenny's Questline With Get You This Achievement.
- This Involves Fixing All The Ropeways To Get To Forest Level 5, And Handing In 99 Guarana Fruits.
- I Advise Buying 8 Guarana Seeds From Her And Planting Them In Plant Boxes In Your Base, Only Takes 3-4 Harvests To Get To 99 If You Do This.
Good Luck!