The quest "Looming Winter" in Duet Night Abyss reveals Blues Fischer as the perpetrator boss, who is Rhythm's younger brother. This quest focuses on uncovering the truth behind Blues Fischer's actions and engaging in a challenging boss fight that tests your combat skills and strategy. 

Looming Winter: Step-by-step guide

Step 1

Speak with Lynn who will give you your first task as a Phoxhunter.

Step 2

Reach right outside the town following the objective "Speak with Clive" where you will be ambushed by Snow Wolves.

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Step 3

After you defeat all the Snow Wolves, Clive will arrive and a cutscene will trigger.

Step 4

Meet with Rhythm who will give you a fishing task.

Step 5

Catch three fish from the nearby pond.

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Step 6

After successfully catching 3 fishes, head to Mist Aken where you'll see Margie.

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Step 7

Meet up with Clive after which you'll be heading into the sewers.

Step 8

Proceed further into the tunnels. After turning the valve to drain the water, prepare for an ambush from a swarm of Filthoids.

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Step 9

Once you’ve defeated the Filthoids, follow the checkpoint to the Mannequin Area, where you’ll need to investigate and search for clues.

Mannequin Area
Step 10

After examining the lower area, press the button to lower the platforms and form a stairway leading upward.

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Step 11

Continue climbing the stairway until you reach the final button, which will trigger a cutscene.

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Step 12

After the cutscene, regroup with the others on the ground floor and begin repairing the comms terminal.

Step 13

Once the comms terminal is repaired, a boss fight will be triggered.

Boss Fight
Step 14

Take the Perpetrator down carefully. Keep moving to avoid its fast dash attacks—roll or sidestep as it winds up, then punish the recovery. Aim to shred its armor (stance) bar first: chip away at it with heavy hits and stance-breaking moves until it cracks, then unload while it's weakness is exposed for massive damage.

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Step 15

After defeating the Perpetrator, proceed to Fischer’s secret base. Once there, interact with the radio and decipher it several times to advance the mission.

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Step 16

After decoding the radio signals, head outside the base and speak with Rhythm. This conversation will trigger a second encounter with the Perpetrator, so prepare for another intense boss fight.

Step 17

After dealing some damage to the Perpetrator, a cutscene will play revealing his true identity — Blues Fischer, Rhythm’s younger brother, marking the end of this quest.

Tips for the Perpetrator boss fight

  • Practice timing your dodges during visual cues for powerful counterattacks.
  • Pay attention to the boss’s specific attack sequence to anticipate and avoid damage.
  • Use your character’s unique weapons to exploit weaknesses or stagger the boss.
  • Keep moving to avoid area damage attacks and maintain positional advantage.
  • Save special moves for when the boss’s armor is broken for maximum impact.

The Looming Winter - Duet Night Abyss: Next Quest Unlocked.

  • The Scarlet Land