Here is the full list of all 11 Raindancer achievements.
Defeat Baanda, Queen of All in under 60 seconds.
Defeat Barshka, The Wall in under 45 seconds.
Defeat Knight Sandir in under 30 seconds.
Complete Raindancer on Story Mode.
Defeat The Rain's Shears in under 2 minutes.
Listen to Gasa.
Defeat Malvo, The First Distiller in under 45 seconds.
Land a Critical Hit on a Target Dummy.
Kill 10 fireflies.
Complete Raindancer on Tempest Mode.
Complete Raindancer on Tempest Mode in under 30 minutes.