Here is the full list of all 48 MEANDERS achievements.
Pick up the ball from the pedestal for the first time
Reach Meander 10
Reach Meander 11
Reach Meander 21
Reach Meander 16
Reach Meander 26
Pick up the cube for the first time
Switch from Bouncer to Cannon path
Switch from Cannon to Bouncer path
Reach Meander 20
Reach Meander 30
Reach Meander 35
Reach Meander 40
Start a new journey
Activate No Meanders' Sky Mode
Obtain Serious M Mode
Obtain Cannon Army Mode
Obtain Za Warudo Mode
Activate 30 Crystals
Activate 30 Bullseyes
Activate 30 Holes
Activate 30 Steppers
Use Bouncers 100 times
Use Cannons 100 times
Use Collapsers 50 times
Cross the Exit holding the ball and get it destroyed
Destroy the ball in water for the first time
Destroy the ball on a laser for the first time
Reach the sky limits and get respawned back
Reach the ocean limits and get respawned back
Burst one Bubble using the ball
Burst one Bubble using the cube
Burst one Bubble using your body
Burst 50 Bubbles
Burst 100 Bubbles
Light one Balloon using the ball
Light one Balloon using the cube
Light one Balloon using your body
Light 25 Balloons
Light 50 Balloons
Clear 10 Meanders
Clear 20 Meanders
Clear 30 Meanders
Clear All Meanders
Reach the AI God
Get All the Achievements
Use Teleports 50 times
Use Teleports 100 times