Here is the full list of all 15 Blaster Master Zero achievements.
See the normal ending.
Clear Boss Blaster Mode.
See the true ending.
Defeat the boss of Area 8.
Obtain every key item.
Defeat the boss of Area 7.
Defeat the boss of Area 7 with a FULL ACCELERATION BLAST.
Defeat the boss of Area 6.
Defeat the boss of Area 5.
Defeat the boss of Area 4.
Defeat the boss of Area 3.
Summon SOPHIA-III from a retry point.
Defeat the boss of Area 2.
Defeat the boss of Area 1.
See the true ending on Destroyer Mode.