Honkai: Star Rail Memory of Chaos Guide: Clearing Endgame Combat

Memory of Chaos is the DPS check sitting at the bottom of the Forgotten Hall. Twelve stages, two teams each, a 30-cycle clock, and a fresh batch of enemies plus a new stage buff every reset. It's the mode that grades your whole roster instead of just your favorite four characters. The nice part is that most missed stars come from planning, not from missing the newest banner unit. A well-built older account full-clears this thing all the time.

How Memory of Chaos Scoring and Cycles Work

Getting in takes a while. The Forgotten Hall opens through the "Fleeting Lights" mission once you hit Trailblaze Level 21, and Memory of Chaos unlocks after you clear the fifteenth stage of The Last Vestiges of the Towering Citadel memory. So it's a mid-game door, not something you walk into on day one.

Once you're in, the shape stays the same every phase. There are twelve stages. Every stage is two fights, called nodes, and you run them back to back with two different teams. No character can appear in both halves. Both halves share one pool of 30 cycles, and the star targets read like this:

• Win the stage
• Win with at least 10 cycles left
• Win with at least 20 cycles left
• Have no downed characters

That third line is the real bar. Finishing with 20 cycles still on the clock means clearing both halves inside 10 cycles total. Split evenly, that's about five cycles a half, which is why the mode feels so sharp once you're past stage 8 or so. The enemy HP pool gets thick up there and every extra turn you spend shows up in the score.

Where the jade actually comes from

| What you do | What you get | | --- | --- | | Clear any stage | Lost Crystal x2, Lucent Afterglow x8, Traveler's Guide x2, Refined Aether x1, 10,000 Credits | | Every 3 stars collected | 60 Stellar Jade plus a Credit bonus | | Earn enough stars (from 21 stars up) | Jade Feathers on top, on a tiered schedule | | Full clear of a phase | Roughly 800-900 Stellar Jade total |

The stage drops are character-building materials, and the Lost Crystal and Lucent Afterglow are the Forgotten Hall's own currencies for its shop. Jade Feathers spend in the Priceless Jewels section of that same shop. The jade is the part that matters month to month - it's a steady pull budget you get for free, over and over, because the mode resets.

Timing on that reset: the switchover lands Monday at 4:00 server time, and a phase runs about six weeks these days. It used to flip faster, so if you read an older guide claiming a two-week cycle, that's out of date.

A cycle is just action value

The clock isn't turns and it isn't real time. Star Rail tracks initiative with Action Value. Every unit's AV equals 10,000 divided by their SPD, the lowest AV acts next, and that unit's gauge resets afterward. A cycle is a chunk of AV the whole fight burns through.

The wrinkle that matters: the first cycle is 150 AV long, and every cycle after it is only 100. Your opener is half again as long as everything that follows. Front-load your damage and the timer works for you - a strong first two cycles is usually the whole difference between 2 stars and 3.

Reading Blessing and Curio Buffs Each Rotation

Quick naming cleanup, because this trips up a lot of people. Blessings and Curios belong to the Simulated Universe and Divergent Universe. That's where the 82-odd Curios live, that's where you pick a Path and stack blessings between worlds. None of it comes with you into the Forgotten Hall. If you've been waiting for a blessing picker to pop up mid-MoC fight, it never will.

Memory of Chaos has its own rotating buff called Memory Turbulence, and it's the closest thing to a "blessing" the mode offers. Each phase gets one. It's printed right on the stage card before you commit anyone, it always helps your side, and it usually fires at the start of each Cycle.

A few real ones from past phases, so you know the flavor:

• One picks an ally on the Path of The Hunt or Erudition at the start of each cycle, makes them act immediately, and pumps their damage by 80% for a turn.
• Another stacks a "Punchline" charge, 5 points whenever a wave or cycle starts, up to 50 total. Then every cycle it dumps a burst of True DMG on the enemies based on that charge.
• An older one added a hit to a counter each time an ally used a skill or ultimate, capped at 10 extra hits, then dealt damage based on each enemy's max HP at the start of every cycle.

Notice what those have in common. The turbulence either hands you extra actions, or it deals damage on its own. Both of those lower how much raw output your own carries need, which is exactly why one roster smashes a phase and then stalls on the next. The characters didn't get worse. The rules changed underneath them.

What to check before you lock a team

Read the turbulence text, then read the enemy list. Five questions cover it:

1. Does the buff name a Path or an element? If it shouts about Hunt and Erudition, that's your hint for who leads each half.
2. Does it pay you for Break, for skill spam, or for ults? Build the half around whatever it rewards.
3. Does it deal damage by itself? Free damage means you can afford a slower, safer team.
4. Does it heal or shield you? Then a greedy three-damage-unit lineup gets a lot less scary.
5. What elements are the enemies weak to, wave by wave? The weakness icons are on the stage card too.

The element question and the turbulence question get answered together. Any element can dent an enemy's HP, but only hits from an element the enemy is weak to will drain its toughness bar. So an off-element carry isn't just doing less damage - they can't even break the thing, and unbroken enemies act on schedule. Match the weakness first, then match the buff, and you've done most of the team-building before the fight starts.

Team Compositions That Clear Both Halves Fast

Two teams, no overlap, one shared cycle budget. That means the job isn't building one great team, it's splitting your roster into two good ones. The classic mistake is stacking your four best units together and then filling the second half with whatever's left. That gets you one fast half and one slow half, and the slow half eats the stars.

The frame that works is one carry, one or two amplifiers, and one sustain. The sustain matters more than people want it to - "have no downed characters" is a star target all by itself, and a dead damage dealer deals zero damage while also costing you the star.

Proven shells you can copy

• Break team: Firefly, Ruan Mei, Imaginary Trailblazer, Lingsha. Gallagher slots in as the budget sustain and does fine.
• AoE Erudition: The Herta with Tribbie or Anaxa beside her, plus a sustain. Melts mob waves.
• Lightning Remembrance: Aglaea carrying, Robin or Sunday amplifying, Hyacine keeping everyone upright.
• DoT: Kafka and Black Swan together, Pela or Silver Wolf debuffing, plus a sustain. Slow to ramp, then it clears rooms on its own.
• Hypercarry: Acheron with two Nihility teammates, or a Hunt carry fed by Robin.

Why the AoE options show up so much: most halves are a mob wave followed by an elite or a boss. A pure single-target team bleeds two or three cycles just clearing the small stuff, and those are cycles the boss half needed.

Speed tuning both sides

Speed decides who acts and how often, so it's the cheapest upgrade you're probably ignoring. Community-tracked breakpoints for a carry, built on that 150/100 AV structure:

| SPD | What it buys you | | --- | --- | | 120 | About 3 actions across the first 2 cycles. Also the threshold for several Planar Ornament set bonuses, like Space Sealing Station and Fleet of the Ageless | | 134 | 2 actions inside the first cycle. The standard target for a main carry | | 142.9 | 5 actions across the first 3 cycles | | 160 | 4 actions in just the first 2 cycles. Luxury territory |

Those are community-measured targets rather than numbers printed in-game, but the math behind them is plain: at 134 SPD a unit's AV is about 74.6, and two of those fit inside a 150 AV cycle with a hair to spare.

Supports are the opposite case. You want them moving before the carry, so their buffs land and then your damage dealer swings with them active. A sustain stuck acting after everyone else is a sustain that's always one turn too late. Give the fast boots to your amps and healers first if you have to pick.

Common Timing Mistakes That Waste Cycles

Most lost cycles aren't lost to weak damage. They're lost to small decisions that add up over two halves.

Burning skill points on the wrong people. The skill point pool is shared by all four units, starts small, and caps at five. Skills spend one, basic attacks refund one. If your amp and your sustain are both skilling every turn, your carry shows up to an empty tank and has to basic attack. That's half a turn gone, every turn, for a whole fight.

Sitting on ultimates. Ults don't cost skill points and they don't consume your turn. Energy also refills between fights, so there's no prize for banking it. The number of players who finish a half with two full ults unspent, one cycle over the line, is kind of wild. Fire them.

Bringing the wrong element. Covered above, but it belongs here because it's the most expensive version of the mistake. Hitting an enemy with an element it isn't weak to leaves the toughness bar untouched, and unbroken enemies take their turns on time. You can lose three or four cycles a half this way without ever feeling like you played badly.

Slow supports buffing after the carry acts. A buff that lands the turn after your damage dealer swung did nothing for that swing. Check the action order bar on the left before you commit, not after.

Pushing through a bad first half. Cycles pool across both halves. If your first half used 20 of 30, the 20-cycles-left star is already dead no matter what happens next. Back out and retry the half instead of throwing your second team at an unwinnable clock. Retrying is free.

Letting someone die to save time. Tempting when a unit is nearly gone and you're one cycle over. But a downed character costs its own star target, so you're trading one star for a chance at another. Usually a bad trade. Restart instead.

Ignoring the mob wave. Single-target carries love the boss and dawdle on the trash. If wave one is eating you alive, that's the half that wants your AoE team, not your boss-killer.

Adjusting Your Roster When You Lack Meta Units

Here's the part that should take the pressure off: you don't need the newest limited five-star to full-clear. Community consensus, and the wikis' own budget team lines, back this up. The free-to-play recommendations on the big guides still lean on Silver Wolf, Asta, Welt, Natasha, Lynx, and a Trailblazer form. Those lines clear the top stages when they're built properly.

The free and cheap glue worth knowing:

• Imaginary Trailblazer buffs Break damage and slots into any break shell for nothing.
• Ice Remembrance Trailblazer is the sleeper. It summons Mem, hands out crit damage buffs, and shoves allies forward in the turn order. People genuinely run it in endgame modes.
• Asta, Pela, Tingyun cover most of your amplifier needs across two teams. Pela's defense shred in particular ages well.
• Herta, Serval, Qingque, Xueyi, Misha give you cheap element coverage for the carries. Herta's follow-up attacks still clean up mob waves.
• Hunt March 7th and Gallagher fill flex damage and budget sustain.
• Standard-banner Welt, Bronya, Himeko, Gepard, Bailu, Clara are all real options, not filler.

Two rules beat a tier list here. First, element usually outranks meta - a mediocre carry of the right element generally outperforms a strong one who can't touch the toughness bar, at least on stages built around break. Second, a built unit beats a pulled one. Before you consider warping for anyone, run the checklist: character at level 80, light cone at 80, every trace unlocked, and skill, ultimate, and talent pushed to their caps (basics top out earlier, around level 6). Relic main stats matter more than perfect substats. That's a boring answer, but it's the one that moves stars.

Also resist solving this with the gacha. If both your halves lack a sustain, that's a coverage problem, and pulling the current carry doesn't fix it. Farm the traces and relics for the people you already own, then move pieces between halves. Swapping your one good sustain to the harder side is free and often worth a full star on its own.

Last bit of math worth holding onto. Three stars is 60 jade, a phase is roughly 800-900 jade, and a pull is 160. So a full clear is a bit over five free pulls every six weeks, forever, whether you claim them or not. Thirty seconds reading the stage card before you lock a team is the cheapest cycle-saver in the whole mode.