Here is the full list of all 22 Meteorite Defense Command achievements.
Beat the first waves and clear Level 5
Be a savior by destroying 1 Million meteorites
Beat the mid-game waves and clear Level 10
Beat the late-game waves and clear Level 15
Become a veteran by destroying 10 thousand meteorites
Become a hero by destroying 100 thousand meteorites
Finish your training by destroying 1 thousand meteorites
Perfectly handle Level 1
Perfectly handle Level 2
Perfectly handle Level 3
Perfectly handle Level 4
Perfectly handle Level 5
Perfectly handle Level 6
Perfectly handle Level 7
Perfectly handle Level 8
Perfectly handle Level 9
Perfectly handle Level 10
Perfectly handle Level 11
Perfectly handle Level 12
Perfectly handle Level 13
Perfectly handle Level 14
Perfectly handle Level 15