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