Here is the full list of all 41 God of Light: Remastered achievements.
Revive the Celestial Tree
Revive the Stone Tree
Revive the Azure Tree
Revive the Snow Tree
Revive the Space Tree
Use the light accumulator 12 times
Complete a level with beams of three different colors
Use the help of the firefly three times
Complete the tutorial
Burn through ten obstacles
Reflect the beam along 20 mirrors
Pass a beam through ten prisms
Pass a beam over eight black holes
Pass a beam through ten lenses
Open eight gates
Pass through 12 teleporting objects
Use the Constructions 5 times
Use the Ice Accumulator 10 times
Use the Gravity accumulator 10 times
Pass a beam through 5 Gravity lenses
Pass a beam through 5 Ice lenses
Collect all the Fireflies
Revive all the Trees
Gain all the achievements
Get 500 or more points in all game levels
Collect all the stars from the Celestial Tree
Collect all the stars from the Stone Tree
Collect all the stars from the Azure Tree
Collect all the Life Crystals from the Snow Tree
Collect all the Life Crystals from the Space Tree
Collect all the fireflies from the Celestial Tree
Collect all the fireflies from the Stone Tree
Collect all the fireflies from the Azure Tree
Collect all the fireflies from the Snow Tree
Collect all the fireflies from the Space Tree
Revive the Desert Tree
Collect all the stars from the Desert Tree
Collect all the fireflies from the Desert Tree
Illuminate 8 amethysts
Rotate the cubes 12 times
Pass the beam through the fragment 6 times