Here is the full list of all 22 Hanaja's Body 2 in One achievements.
Complete the tutorial.
Complete Chapter 1.
Complete Chapter 2.
Complete Chapter 3.
Complete Chapter 4.
Witness the true ending.
Be transformed by the enemy at least 10 times.
Be transformed by the enemy at least 100 times.
Defeat at least 30 enemies.
Defeat at least 100 enemies.
Heal yourself for at least 1000 Vitality (Items do not count).
Heal yourself for at least 5000 Vitality (Items do not count).
Attempt to heal the enemy for at least 500 Vitality.
Attempt to heal the enemy for at least 3000 Vitality.
Trigger at least 10 Reactions.
Trigger at least 100 Reactions.
Used the Golden Breath attack to create 2 shiny latex drones.
Used the Golden Breath attack to create 6 shiny latex drones.
Used the Golden Breath attack to create 12 shiny latex drones.
Kill an enemy by healing them.
You didn't quite think that one through, did you? Perhaps you should "reflect" on that.
Complete the game without falling in battle. Those tempting CGs will just have to wait.