Here is the full list of all 24 BattleStorm achievements.
Destroy 2,000 enemies.
Achieve a multiplier of 300x
Complete each level in World 1.
Achieve a multiplier of 200x
Complete a level without collecting a single powerup.
Achieve a multiplier of 100x
Achieve a multiplier of 400x
Achieve a multiplier of 500x
Achieve 75% accuracy on any level.
Achieve 90% accuracy on any level.
Complete each level in World 2.
Complete each level in World 3.
Complete each level in World 4.
Complete all 25 levels.
Score 1 billion total points.
Score 2 billion total points.
Score 5 billion total points.
Destroy 5,000 enemies.
Destroy 10,000 enemies.
Destroy 100 enemy boats.
Destroy 500 fuel tanks.
Collect 500 powerups.
Complete any level without taking damage.
Use your shield to deflect an enemy bullet that would've killed you, then complete the level.