Memory of Chaos Stage 12 Guide for Version 3.7
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See how to beat Forgotten Hall's Memory of Chaos Stage 12 in Honkai: Star Rail Version 3.7 with this guide! We've got the best teams, recommended characters, and rewards for Monkey Business 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
| Monkey Business | |
|---|---|
| First Half |  
|
| Second Half |  
|
Current Memory of Chaos Phase
| Monkey Business | |
|---|---|
| When an ally target attacks an Elite or Boss enemy with a corresponding Type weakness, add 1 Hits Per Action to "Memory Turbulence". Breaking an Elite or Boss enemy's weakness adds an additional 1 Hits Per Action, stacking up to 10 hits. At the start of each Cycle, each hit of "Memory Turbulence" deals 1 instance of True DMG to a random enemy target. | |
| Phase Duration | 12/08/2025 - 01/19/2026 |
Memory of Chaos Stage 12 Best Teams
Monkey Business Best Teams
| Castorice DPS | |||
|---|---|---|---|
 Castorice |  Evernight |  Cyrene |  Hyacine |
| Kafka DoT | |||
 Hysilens |  Kafka |  Black Swan |  Huohuo |
| Archer DPS | |||
 Archer |  Sparkle |  Cipher |  Luocha |
| F2P Team | |||
| Archer |  Xueyi |  Trailblazer (Ice) |  Lynx |
| Phainon DPS | |||
|---|---|---|---|
 Phainon |  Sunday |  Cerydra |  Permansor Terrae |
| Anaxa DPS | |||
 Anaxa | Sunday | Cerydra | Permansor Terrae |
| Firefly DPS | |||
 Firefly |  Fugue |  Ruan Mei |  Lingsha | F2P Team |
 Dan Heng |  March 7th (Imaginary) |  Asta | Permansor Terrae |
Jing Yuan
Pela
Silver Wolf
Acheron
Jiaoqiu
Aglaea
Tribbie
Mydei
Blade
Gepard
Aventurine
Gallagher
Boothill
Yunli
Feixiao
SaberUse Quantum and Lightning Units in the First Half
Enemies in the first half are weak to Quantum and Lightning. We recommend using units that specialize in single-target damage or use Skill Points to deal with Sam.
Use Physical and Fire Units in the Second Half
Enemies in the second half are weak to Physical and Fire. We recommend units that deal a lot of toughness damage or have high survivability when up against Hoolay.
How to Beat Stage 12 - Monkey Business
Monkey Business First Half
Defeat the Cyclonic Swarm Mother First
For the first half, focus on the Cyclonic Swarm Mother first since it can summon enemies and use it to deal damage. Try to defeat its summons as well to decrease the damage dealt from the Partuition of Tides attack.
Consume Skill Points to Reduce Molten Energy
Sam will enter the Combustion State to enhance their attacks. Use attacks that consume Skill Points to deplete Sam's Molten energy.
When Sam has no more Molten Energy, they will exit the Combustion state and receive increased damage.
Monkey Business Second Half
Inflict Weakness Break on Hoolay
For Wave 2, prioritize on defeating or inflicting Weakness Break on Hoolay when he is on Moon Rage to prevent them from dealing damage through Lupine Chase Calls Bloody Gleam.
Memory of Chaos Stage 12 Enemies
First Half
| Wave 1 Enemies | Weaknesses |
|---|---|
 The Ascended
x1 |
|
 Cyclonic Swarm Mother
x1 |
|
 Mirage Fizzle Kid
(Summon) |
|
| Wave 2 Enemies | Weaknesses |
|
Stellaron Hunter - SamSecond Half
| Wave 1 Enemies | Weaknesses |
|---|---|
|
|
|
|
|
|
 Meteoric Eagle
(Summon) |
|
| Wave 2 Enemies | Weaknesses |
|
|
|
 Sableclaw Wolftrooper
(Summon) |
|
|
|
Noontide Gryphon
Ichor Memosprite - Winged Serpent
Borisin Warhead - Hoolay
Eclipse WolftrooperMemory 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 - Memory Guides
| 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
| 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 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 |
Comment
Anonymous 6 monthsClearly dev have never playtested V3.3 MOC12 while MOC11 is super ez. Not only Hoolay has so many consecutive moves, he also has a lot of HP. At this rate I think even until 2030 they won't reduce MOC12 boss' overly-inflated HP, not even worth playing. For those haven't tried, just go until MOC11 srsly
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Memory of Chaos Stage 12 Guide for Version 3.7
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I don't know if this helps anyone but I finally this in under 10 turns using Hysilens/Kafka/Ruan Mei/Gallagher against Svarog. If you have Robin, you can switch her instead of Ruan Mei. For Aventurine, I did the standard Hyacine/Castorice/Tribbie/RTB. Tribbie had been using an S1 DDD! but I traded it out for an S5 Cogs. Way more Ults for Tribbie. Brute force, rely on Mem's True DMG and Action Advance and make sure to spend all of Pollux the turn before the Mad Party so you don't breath dice.