To unlock this achievement you need to upgrade every node in each tree for each potion (Health, Attack, Defense, & Stamina):
To do so will take a total of 308 Golden Amber. As mentioned in previous guides, it's highly encouraged that you collect all Regular Chests
throughout your playthrough to cut down on any grinding you may have to due post-game. Each chest rewards you with 3 Golden Amber.
For chest locations, you can use this interactive map: https://mapgenie.io/immortals-fenyx-rising/maps/golden-isle
It's also encouraged that you chop down any glowing trees that you pass by throughout your playthrough. Doing so will help you with:
Glowing trees look like this towards the base:
As mentioned in previous comments, once you obtain the Chest Piece "Love's Embrace" it will help with farming the necessary Golden Amber. Wearing the chest piece occasionally rewards the wearer with 2 Golden Amber, as opposed to 1.
Here are directions on how and where to find "Love's Embrace" chest piece: https://www.gameclubz.com/immortals-fenyx-rising-aphrodite-a...
The starting island has one of the best farming locations that I have found for your pre or post-game farming. Fast travel to "Messenger of the Gods" and there are plenty of patches of dead trees all around the island within short distances of each other with minimal enemies to fight.