Here is the full list of all 16 Q-YO Blaster achievements.
Defeat the big Monster
Defeat the four thieves
Defeat Himmel 1
Defeat Dragunfly machine
Defeat Space Witch
Can you hear me, mayor Tommi?
Defeat Arvo 737B
Defeat Queen of the 6th floor
Poor Mr. Garrison
Get 1000000 points
The Witch is defeated by her own attack
Defeat the annoying worm
Finish game without continuing
Complete a game from beginning to end in expert difficulty
Defeat Maximum Bacterium
Defeat Dr. Robobug