Here is the full list of all 27 GemBreak achievements.
Hit 12 Red Gems on a level
Hit 5 Bonus Bricks with a single Ball!
Get help from the UFO 50 Times
Unlocks when Solar Storm has been called upon 50 Times
Hit 500 blue square bricks
Slide or hit 100 Speedbricks!
Hit 50 Green Bonus Bricks!
Starting the space journey by completing level 10
Hit 100 Red Gems!
Unlocked when you have died 50 times
Bounce the ball 8 times with the Breakout Bouncer
Unlock when completing the first level
Enter 10 black holes!
Bounce 100 times in one playthrough
Get 25.000 points
Get 50.000 points
Get 100.000 points
Ball got stuck in space
Get 150.000 points
Unlocked when a big ball goes acid
Unlocked when a big ball goes fire
Unlocks when you complete lvl 50
Hit 6 Red Gems with Buzz Saw
Unlocks when you complete lvl 90
Unlocks when you have hit 1000 Round Blue Bricks
Hit 5 Red Gems with the Acid Ball
Unlocks when you have used Meteor Shower 20 times