Do you have what it takes to defeat the different Duet Night Abyss Bosses? Before you take one on in Duet Night Abyss, make sure you have good weapons and characters to help you reach victory. If you do beat a boss, you have the chance to obtain loot, as they drop items upon defeat!
Duet Night Abyss Bosses
I’ve broken it down into categories so you can see what type of boss they are. I’ve also included any additional information, including where to find them and what they drop.
Mission Bosses
As the name implies, you need to face these bosses when you complete missions in the main story. You will need to beat these if you want to progress further into the game. They’re tough to beat, so make sure you check out our posts above on which characters and weapons are the best to use.
- Subylle
- Location: Purgatorio Island
- Drops:
- Secret Letter: Tabethe
- Secret Letter: Shackle of Lonewolf
- Secret Letter: Sacrosanct Chorus
- Secret Letter: Stellar Finality
- Secret Letter: Blast Artistry
- Ring of Severed Fear
- Eclosioner
- Location: Eastern District Icelake
- Drops:
- Secret Letter: Rhythm
- Secret Letter: Wandering Rose
- Secret Letter: Sacrosanct Decree
- Secret Letter: Exiled Thunderwyrm
- Secret Letter: Submerged Serenade
- Ring of Chronal Reversion
- Crystalophie
- Location: Glevum Pit
- Drops:
- Secret Letter: Yale
- Secret Letter: Truffle and Filbert
- Secret Letter: Vernal Jade Halberd
- Secret Letter: Viridis Reefs
- Secret Letter: Guixu Ratchet
- Ring of Escaped Entropy
Mini Bosses
These bosses are also crucial to progressing the story, but they are slightly easier to beat… perhaps because they are mini!
Note – We don’t have much information on what these drop at the moment. When we do, we’ll update this post, so make sure you save this page and regularly check back.
- Psyche
- Location: Eastern District Icelake
- The Sinner
- Location: Lonza Fortress
- Battle Maven
- Location: Lonza Fortress


