See how to beat Forgotten Hall's Memory of Chaos Stage 12 in Honkai: Star Rail Version 2.7 with this guide! We've got the best teams, recommended characters, and rewards for Troopship Mayhem here.

Memory of Chaos Stage 12 Info

Memory of Chaos Stage 12 Details

Stage Objectives

Objectives	♦ Win with at least 10 cycle(s) left ♦ Win with at least 20 cycle(s) left ♦ Have no downed characters

Type Weaknesses

	Troopship Mayhem
First Half
Second Half

Current Memory of Chaos Phase

Troopship Mayhem Effect
At the start of each wave or Cycle, summons 2 Trotters onto the field. When defeated, the Trotters deal a set amount of DMG for 1 time to all Elite level enemies and above.
Phase Duration	01/06/2025 - 02/17/2025

Memory of Chaos Stage 12 Best Teams

Troopship Mayhem Best Teams

Use Lightning and Wind Units in the Second Half

All enemies in the First Half are weak to Lightning and Wind. Fire characters can also be used here for the Decaying Shadow and Svarog.

Use AoE Units in the Second Half

Enemies in the second half are all weak to Imaginary and Ice. You can also bring a Quantum character mostly for Wave 2.

We recommend bringing at least one character who can deal DMG to all enemies to easily take down The Swarm: True Sting and its summons.

How to Beat Stage 12 - Troopship Mayhem

Troopship Mayhem First Half

Keep the Decaying Shadow's Toughness Low in Wave 1

In Wave 1, make sure to decrease the Toughness of the Decaying Shadow so that when it charges up for Liberation of the Golden Age, you can easily cancel the attack through Weakness Break.

Focus on Svarog in Wave 2

For Wave 2, focus on taking out Svarog to prevent him from summoning the Auxiliary Robot Arm Unit. If the Robot Arm emerges, inflict Weakness Break on Svarog or the Arm itself to prevent your characters from getting taken.

As for the Howling Casket, only attack it if your party members are affected with Terror Grip.

Svarog Enemy Guide

Troopship Mayhem Second Half

Prioritize the Shape Shifter in Wave 1

Between the two Elite enemies, focus on taking out the Disciples of Sanctus Medicus - Shape Shifter since it can heal itself.

You can either take down the Mara-Struck Soldier summons or remove the debuff with character Skills to remove the self-healing buff.

Defeat the Small Sting Enemies in Wave 2

For Wave 2, take down the Juvenile Sting enemies summoned by the True Sting to inflict a Vulnerability debuff on it.

When Wave 2 Phase 2 starts, the True Sting can summon the Lesser Sting enemies which can inflict their targets with Outrage, so take them down as soon as possible.

The Swarm - True Sting Enemy Guide

Memory of Chaos Stage 12 Enemies

First Half

Wave 1 Enemies	Weaknesses
Decaying Shadow x1
Howling Casket x1
Warp Trotter x1
Warp Trotter x1
Wave 2 Enemies	Weaknesses
Svarog x1
Howling Casket x1
Auxiliary Robot Arm Unit (Summon) x1
Warp Trotter x1
Warp Trotter x1

Second Half

Wave 1 Enemies	Weaknesses
Disciples of Sanctus Medicus - Shape Shifter x1
Automaton Direwolf x1
Warp Trotter x1
Warp Trotter x1
Mara-Struck Soldier (Summon) x1
Wave 2 Enemies	Weaknesses
The Swarm: True Sting
Juvenile Sting x2
Lesser Sting x2
Warp Trotter x1
Warp Trotter x1

Memory of Chaos Stage 12 Rewards

Completion Rewards

All Rewards
Lost Crystal x2	Lucent Afterglow x8	Traveler's Guide x2
Refined Aether x1	Credit x10000

Honkai: Star Rail Related Guides

Forgotten Hall Guide

Forgotten Hall - Memory Guides

Memory of Jarilo-VI Guide

The Last Vestiges of Towering Citadel Stages
Stage 1	Stage 2	Stage 3	Stage 4	Stage 5
Stage 6	Stage 7	Stage 8	Stage 9	Stage 10
Stage 11	Stage 12	Stage 13	Stage 14	Stage 15

Memory of Xianzhou Guides

Memory of Xianzhou Guide

The Voyage of Navis Astriger Stages
Stage 1	Stage 2	Stage 3
Stage 4	Stage 5	Stage 6

Memory of Chaos Guides

Memory of Chaos Guide for Version 2.7

Memory of Chaos Stages
Stage 1	Stage 2	Stage 3	Stage 4
Stage 5	Stage 6	Stage 7	Stage 8
Stage 9	Stage 10	Stage 11	Stage 12