Here is the full list of all 13 BeatBlasters III achievements.
Defeat the Butcher at the Insane difficulty.
Finish the game at insane difficulty.
Finish the game at easy or normal difficulty with 3 stars rating everywhere.
Defeat Choco Chacal without shooting him. Use candies to take him down!
Complete the Space Repair Shop level without letting any barrel be dropped by enemies.
Finish the Fort Battle level without using your shield once.
Beat the Catminator without having to push the button to raise the fences!
Complete the Baby Rescue level without using your shield once.
Finish the King Banana level without charging once with King Banana at full health.
Complete the Bananas of the Far West level without using your speed boots.
Complete the level Pirate Galore without letting any pirate set foot on land.
In the Elderly Crossing level, have a car do a triple backflip in the air and land it back on its feet.
Successfully complete 100 consecutive combos.