Here is the full list of all 34 Ballex achievements.
Finish the tutorial level
Finish Level 1
Finish Chapter 1
Die 12 times in total
Die 100 times in total
Die 1000 times in total
Suicide 10 times in game
Suicide 100 times in game
Suicide 1000 times in game
Rot the paper ball in water 10 times
Rot the paper ball in water 50 times
Rot the paper ball in water 100 times
Jump on the red board 10 times
Jump on the red board 100 times
Jump on the red board 1000 times
Jump 25 times in a single play without dying
Jump 50 times in a single play without dying
Jump 100 times in a single play without dying
Finish a level with durability less than 10
Finish a level with durability less than 5
Finish a level with durability less than 1
Finish a level with full durability
Reach the velocity of 500 m/s
Reach the velocity of 1,000 m/s
Accumulate crystals to 999
Accumulate crystals to 2333
Accumulate crystals to 23333
Detonating TNTs 10 times
Detonating TNTs 100 times
Detonating TNTs 1000 times
Roll 1km on single rail
Roll 10km on single rail
Roll 100km on single rail