Here is the full list of all 23 Seed of Life achievements.
Light up 1 lamp
Meet Nar for the first time
Travel for 1km
Travel for 10km
Travel for 20km
Activate the first seed
Light up 5 lamps
Light up 10 lamps
Activate the second seed and save lumia
Interact with 5 alien landmarks
Interact with 1 lumium plants
Interact with 50 lumium plants
Push 1 shadow
Push 20 shadows
Push 50 shadows
Interact with 5 special lumium plants
Raise talisman capacity to 100 Lumium
Raise talisman capacity to 500 Lumium
Raise talisman capacity to 1,000 Lumium
Raise talisman capacity to 1,500 Lumium
Regenerate 100 life
Regenerate 2,000 life
Regenerate 5,000 life