Here is the full list of all 22 Idle Bouncer achievements.
Activate at least 10000 meta-energy
Upgrade Amplifier Auto Upgrade to level 10 and Free Amplifier Auto Upgrade to level 10 for any ball
Accumulate 1 Millinillion energy in your storage (10^3003)
Upgrade powerful bounce to level 10 for any ball
Upgrade mass powerful bounce to level 10 for any ball
Activate at least 1000 meta-energy
Pop 10000 bubbles
Make 1 million bounces with all balls combined
Upgrade Gravity multiplier to x10
Pop 1000 bubbles
Upgrade Maximal Idle Bonus Multiplier to 1 Googol (10^100)
Upgrade Density multiplier to x1000000
Pop 100 bubbles
Improve all balls to make them squared
Improve all balls twice to make them cubed
Accumulate 1 Googol energy in your storage (10^100)
Unlock all 6 balls
Upgrade Gravity multiplier to x2
Activate at least 10 meta-energy
Spend 100 Nonillion energy (10^32)
Accumulate 1 Billion energy in your storage
Make 1000 bounces with all balls combined