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