Here is the full list of all 24 BattleStorm achievements.
Achieve a multiplier of 100x
Achieve a multiplier of 200x
Achieve a multiplier of 300x
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 1.
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 2,000 enemies.
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.
Complete a level without collecting a single powerup.
Use your shield to deflect an enemy bullet that would've killed you, then complete the level.