When Dreams Remain Unfinished/Dream Investigation
Last updated 2026-09-11
Tutorials
- Dream Combat General Rules
- File:Tutorial Dream Combat General Rules.png· You can select one skill to use per turn.
· Choose a skill and select a suitable target, then click the skill again to cast it. (Hold a skill to view its detailed description.)
· You can also control a monster's movement to find the best position to use your skills.File:Tutorial Energy.pngSome monster skills can restore Energy, while certain powerful skills consume Energy to activate.
Different skills are color-coded from weak to strong: green, blue, purple, and orange.
- Ethereal-Specific Mechanics: Marks
- File:Tutorial Ethereal-Specific Mechanics: Marks.png· Marks can increase DMG dealt to enemies.
· Support Ethereals' skills can apply marks to enemies, while DPS Ethereals' skills can consume marks to trigger an Aftershock.
- Monster Category Counters
- File:Tutorial Monster Category Counters.png· There are 3 monster categories. Ethereal counters Mechanical, Mechanical counters Biological, and Biological counters Ethereal.
· When attacking, monsters deal increased DMG to the type they counter, and reduced DMG to the type that counters them.
- Rapid-Press Interaction
- File:Tutorial Rapid-Press Interaction.gifIonized Skill 2 supports Rapid-Press Interaction. When the button appears, tap/press repeatedly for better skill effects.
- Mechanical-Specific Mechanics: Energy
- File:Tutorial Mechanical-Specific Mechanics: Energy 1.png· The core mechanic of Mechanical monsters is Energy.
· Offensive mechs' powerful skills consume large amounts of energy, but you can use Support mechs to charge them for higher damage output quickly.
- Biological-Specific Mechanics: Buffs
- File:Tutorial Biological-Specific Mechanics: Buffs 1.png· The core mechanic of Biological monsters is Buffs.
· Offensive companion skills are enhanced based on the current number of buff stacks. You can use Support companions to apply buffs and unleash burst damage.
· Stat-enhancing buffs last 2 turns. Triggering the same-name buff again refreshes the effective turn number. You can check buff status by pressing C to access the Status tab.
- Scene Prop: Charging Pod
- File:Tutorial Scene Prop Charging Pod 1.pngScene Props will randomly appear in some stages. They can be destroyed with just one attack. When you attack an enemy, destroying the Scene Prop is not a bad idea.
Charging Pod: Break it to restore Energy.
- Scene Prop: Swift Clock
- File:Tutorial Scene Prop: Swift Clock 1.pngScene Props will randomly appear in some stages. They can be destroyed with just one attack. When you attack an enemy, destroying the Scene Prop is not a bad idea. Swift Clock: Break it to act again immediately.
- Scene Prop: Healing Pod
- File:Tutorial Scene Prop: Healing Pod 1.pngScene Props will randomly appear in some stages. They can be destroyed with just one attack. When you attack an enemy, destroying the Scene Prop is not a bad idea. Healing Pod: Break it to restore HP.
Auxiliary Plug-Ins
| Shield Break Marker Plug-In Attacks against marked enemies can pierce shields | |
| Soul Eater Plug-In Defeating enemies restores 60 Energy. | |
| Speed King Plug-In Successfully performing quick-time interactions grants 20 bonus Energy. | |
| Invincible Speed Plug-In The fastest ally gains full starting Energy. | |
| Let's Try It Again Plug-In After a Mark is removed, your fastest unit takes another action immediately. Limited to once per round. | |
| Your Turn Belongs to My Plug-In Upon an enemy's defeat, the one who dealt the final blow may act instantly. Limited to once per round | |
| Weaken Plug-In When using a skill, if the target is an enemy, randomly dispel one stat buff from the main target | |
| Purification Plug-In Dispels the mark on allies when they receive a stat buff | |
| Lifesteal Plug-In After defeating an enemy unit, the one that dealt the final blow gains a healing buff at the start of each turn for 2 turns | |
| For All Plug-In When a support ally uses a skill that grants a buff, it grants an extra turn. Limited to once per round. |
Light Nap
Dream Into the Outer Ring
| Story-1 — Dream Into the Outer Ring | |
|---|---|
| Commission | Dream Into the Outer Ring |
| Dream Details | Everyone enters Yidhari's dream and finds themselves in the Outer Ring. While puzzled, Lucia notices Big Daddy surrounded by Ethereals. Better help him out first. |
Light Nap Battle (I)
| Combat-1 — Light Nap Battle (I) Easy | |
|---|---|
| Dream Description | Try ordering an Ethereal ally to eliminate enemies. Make good use of the Energy system and quick-time interactions to fight more efficiently. (For this stage, the skill activation mode is set to Classic Mode.) |
| Key Enemy Info | Wave 1 Tyrfing - Energized Wave 2 Tyrfing - Energized Tyrfing - Energized |
| Recommended Squad | Tyrfing |
| Completion Rewards | |
Master Ethereal Trainer
| Story-2 — Master Ethereal Trainer | |
|---|---|
| Commission | Become a Master Ethereal Trainer |
| Dream Details | After the battle, everyone heads to Blazewood to rest and ask Big Daddy about the situation there. |
Light Nap Battle (II)
| Combat-2 — Light Nap Battle (II) Easy | |
|---|---|
| Dream Description | Master the Ethereal mark system to deal higher DMG and wipe out enemies! |
| Key Enemy Info | Tyrfing - Energized Light Patroller |
| Recommended Squad | Tyrfing Frenzied Maniac |
| Completion Rewards | |
Old and New Friends
| Story-3 — Old and New Friends | |
|---|---|
| Commission | Old and New Friends |
| Dream Details | Lucia seems to have made a "new friend". Go talk to her and find out more. |
Light Nap Battle (III)
| Combat-3 — Light Nap Battle (III) Normal | |
|---|---|
| Dream Description | The enemy Heavy Striker Mark II is a single unit with high HP. Defeat it with Frenzied Maniac's single-target burst ability. As for the remaining enemies, try using Ionized - Nassellaria's AoE DMG skill to strike multiple targets at once. |
| Key Enemy Info | Heavy Striker MK II Light Patroller Light Patroller |
| Recommended Squad | Tyrfing Ionized - Nassellaria Frenzied Maniac |
| Completion Rewards | |
Light Nap Battle (IV)
| Combat-4 — Light Nap Battle (IV) Normal | |
|---|---|
| Dream Description | The large number of Light Patroller enemies makes them troublesome. Consider using Dullahan along with Ionized - Nassellaria's AoE DMG skill to clear them out. |
| Key Enemy Info | Medium Patroller Light Patroller Light Patroller Light Patroller Light Patroller Light Patroller |
| Recommended Squad | Tyrfing Ionized - Nassellaria Frenzied Maniac Dullahan |
| Completion Rewards | |
Special Offensive Mech Records
| Story-4 — Special Offensive Mech Records | |
|---|---|
| Commission | Do Combat Machines Dream of Electric People |
| Dream Details | After the battle, a peculiar piece of mechanical wreckage was recovered from the battlefield. Everyone examined it closely, hoping to uncover some clues. |
Light Nap Battle: Troublemaker
| Combat-5 — Light Nap Battle: Troublemaker Hard | |||
|---|---|---|---|
| Dream Description | This is the first Troublemaker-Rank enemy in the dream, so proceed with caution. Try using Dullahan's skill to mark as many enemies as possible, then unleash Thracian's skill mechanic to deal burst DMG! | ||
| Key Enemy Info | Initial Enemies Typhon Slugger Light Patroller Light Patroller Light Patroller When all Light Patrollers are defeated Beholder Engine Beholder Engine Beholder Engine | ||
| Recommended Squad | Tyrfing Frenzied Maniac Dullahan Thracian |
Recommended Plug-Ins |
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| Completion Rewards | |||
Deep Sleep
Dream of Port Elpis
| Story-1 — Dream of Port Elpis | |
|---|---|
| Commission | Dream of Port Elpis |
| Dream Details | Upon entering the dream of Port Elpis, you see Yidhari inside the harbor. Just as you're about to reach her, a port boy blocks the entrance, forcing you to negotiate. |
Deep Sleep Battle (I)
| Combat-1 — Deep Sleep Battle (I) Easy | |||
|---|---|---|---|
| Dream Description | Command your Mechanical allies to eliminate enemies. Use type advantages to inflict extra DMG against biological foes. And don't forget Energy is vital for Mechanical allies, so make the most of the Beholder Engine to recharge them! | ||
| Key Enemy Info | Security Operative Security Operative Security Operative | ||
| Recommended Squad | Beholder Engine Light Patroller |
Recommended Plug-Ins |
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| Completion Rewards | |||
Birthday Present
| Story-2 — Birthday Present | |
|---|---|
| Commission | Birthday Present |
| Dream Details | After handling the port boy, head into Port Elpis and find Yidhari, who's talking with an elderly man. |
Deep Sleep Battle (II)
| Combat-2 — Deep Sleep Battle (II) Easy | |||
|---|---|---|---|
| Dream Description | The enemy Flame Dreamer will keep granting buffs to his allies — make sure to take him out first! | ||
| Key Enemy Info | Security Operative Security Operative | ||
| Recommended Squad | Beholder Engine Light Patroller Medium Patroller |
Recommended Plug-Ins |
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| Completion Rewards | |||
Clues about the Darkwater Research Center
| Story-3 — Clues about the Darkwater Research Center | |
|---|---|
| Commission | Clues about the Darkwater Research Center |
| Dream Details | After being taught a lesson, the dock security guard has become much more cooperative. Ask him about the location of the Darkwater Research Center. |
Deep Sleep Battle (III)
| Combat-3 — Deep Sleep Battle (III) Normal | |||
|---|---|---|---|
| Dream Description | The enemy Dreaming Hymnist will empower the Bulky Enforcers. Use the Heavy Striker Mark II's area DMG skill to deal with them and reduce the threat posed by Bulky Enforcers. | ||
| Key Enemy Info | Bulky Enforcer | ||
| Recommended Squad | Beholder Engine Light Patroller Heavy Striker MK II Medium Patroller |
Recommended Plug-Ins |
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| Completion Rewards | |||
Deep Sleep Battle (IV)
| Combat-4 — Deep Sleep Battle (IV) Normal | |||
|---|---|---|---|
| Dream Description | The enemy Flame Dreamer will keep buffing the Bulky Enforcer. Try using Terror Raptor's single-target burst skill to take down the Flame Dreamer first. | ||
| Key Enemy Info | Bulky Enforcer Bulky Enforcer | ||
| Recommended Squad | Beholder Engine Heavy Striker MK II Medium Patroller Terror Raptor |
Recommended Plug-Ins |
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| Completion Rewards | |||
Tales from the Docks
| Story-4 — Special Offensive Mech Records | |
|---|---|
| Commission | Tales from the Docks |
| Dream Details | The defeated Captain Morgan watches everyone warily, standing firm in defiance. It feels necessary to explain the situation to him. |
Deep Sleep Battle: Troublemaker
| Combat-5 — Deep Sleep Battle: Troublemaker Hard | |||
|---|---|---|---|
| Dream Description | This is the strongest enemy in this dream zone. Try making use of Auxiliary Plug-In effects and finish it off with Terror Raptor's single-target burst skill! | ||
| Key Enemy Info | Initial Enemies Rampant Brute Security Operative Security Operative Security Operative When all Security Operatives are defeated | ||
| Recommended Squad | Beholder Engine Heavy Striker MK II Medium Patroller Terror Raptor |
Recommended Plug-Ins |
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| Completion Rewards | |||
Phantoms of the Past
| Story-5 — Phantoms of the Past | |
|---|---|
| Commission | Phantoms of the Past |
| Dream Details | After helping Captain Morgan deal with the dock crisis, Yidhari is trying to get him to share the shipping information. Help her out. |
Dream Abyss
The Final Dream
| Story-1 — The Final Dream | |
|---|---|
| Commission | The Final Dream |
| Dream Details | Re-entering the dream, everyone arrives at the shattered Darkwater Research Center, where Yidhari stands alone. Go over and comfort her. |
Dream Abyss Battle (I)
| Combat-1 — Dream Abyss Battle (I) Easy | |||
|---|---|---|---|
| Dream Description | Buff effects are crucial for Biological allies. Once a Bulky Enforcer receives a buff, its skills are enhanced. Use the Dreaming Hymnist to grant buffs to the Bulky Enforcer! | ||
| Key Enemy Info | Ionized - Nassellaria Tyrfing - Energized Tyrfing - Energized | ||
| Recommended Squad | Bulky Enforcer |
Recommended Plug-Ins |
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| Completion Rewards | |||
Dream Abyss Battle (II)
| Combat-2 — Dream Abyss Battle (II) Normal | |||
|---|---|---|---|
| Dream Description | Dullahan places marks on your allies, so try taking it out first with the Bulky Enforcer. At the same time, using Dreaming Hymnist to keep buffing the Bulky Enforcer will give you a huge advantage. | ||
| Key Enemy Info | Dullahan - Energized Ionized - Nassellaria Ionized - Nassellaria | ||
| Recommended Squad | Security Operative Bulky Enforcer |
Recommended Plug-Ins |
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| Completion Rewards | Flame Dreamer | ||
Farewell
| Story-2 — Farewell | |
|---|---|
| Commission | Farewell |
| Dream Details | After defeating the enemies, everyone follows the escape route Yidhari took back then. Continue forward with the group to uncover the truth of that day. |
Dream Abyss Battle (III)
| Combat-3 — Dream Abyss Battle (III) Normal | |||
|---|---|---|---|
| Dream Description | The enemy Frenzied Maniac deals heavy DMG, posing a serious threat. Prioritize eliminating it with your DMG-dealing allies. | ||
| Key Enemy Info | Frenzied Maniac Dullahan - Energized Tyrfing - Energized | ||
| Recommended Squad | Security Operative Bulky Enforcer |
Recommended Plug-Ins |
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| Completion Rewards | |||
Dream Abyss Battle (IV)
| Combat-4 — Dream Abyss Battle (IV) Normal | |||
|---|---|---|---|
| Dream Description | The enemy Thracian has AoE burst skills, so you'll need to dispel marks from your squad quickly. Alternatively, use Rampant Brute's AoE DMG skill to take out the enemy Tyrfing first, preventing it from adding marks for the Thracian. | ||
| Key Enemy Info | Thracian Tyrfing - Energized Tyrfing - Energized Tyrfing - Energized Tyrfing - Energized | ||
| Recommended Squad | Bulky Enforcer Rampant Brute |
Recommended Plug-Ins |
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| Completion Rewards | |||
Unfinished Dreams
| Story-3 — Unfinished Dreams | |
|---|---|
| Commission | Unfinished Dreams |
| Dream Details | You're finally nearing the area where a dream exit can appear, but the Dead End Butcher is closing in. Hurry and get Yidhari out of the dream! |
Dream Abyss Battle: Troublemaker
| Combat-5 — Dream Abyss Battle: Troublemaker Hard | |||
|---|---|---|---|
| Dream Description | At the heart of Yidhari's nightmare lies the strongest foe in this dream. Keep your allies buffed, draw on the experience you've gained, and shatter this nightmare once and for all! | ||
| Key Enemy Info | Initial Enemies Notorious - Dead End Butcher Ionized - Nassellaria Ionized - Nassellaria Ionized - Nassellaria When all Nassellaria are defeated Tyrfing - Energized Tyrfing - Energized Tyrfing - Energized | ||
| Recommended Squad | Bulky Enforcer Rampant Brute |
Recommended Plug-Ins |
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| Completion Rewards | |||
Simulation Challenge
Simulation Challenge (I)
| Combat-1 — Simulation Challenge (I) Hard | |||
|---|---|---|---|
| Dream Description | Special Mechanic: When allies attack an enemy with a mark, they gain an extra 20 Energy. | ||
| Perfect Condition | Deploy only 1 ally | ||
| Key Enemy Info | Terror Raptor Medium Patroller Beholder Engine Beholder Engine Beholder Engine Light Patroller Light Patroller Light Patroller | ||
| Recommended Squad | Thracian |
Recommended Plug-Ins |
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| Completion Rewards (With Perfect Clear) |
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Simulation Challenge (II)
| Combat-2 — Simulation Challenge (II) Nightmare | |||
|---|---|---|---|
| Dream Description | Special Mechanic: Troublemaker-Rank enemies have increased HP and ATK, and enter battle with a large shield. Once all other enemies are defeated, the Troublemaker's shield vanishes and all allies can act again immediately. | ||
| Perfect Condition | Complete the challenge within 4 rounds | ||
| Key Enemy Info | Typhon Slugger Medium Patroller Beholder Engine Beholder Engine Beholder Engine | ||
| Recommended Squad | Ionized - Nassellaria Frenzied Maniac Dullahan Thracian |
Recommended Plug-Ins |
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| Completion Rewards (With Perfect Clear) |
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Simulation Challenge (III)
| Combat-3 — Simulation Challenge (III) Hard | |||
|---|---|---|---|
| Dream Description | Special Mechanic: When allies succeed in an quick-time interaction, they gain an extra 20 Energy. | ||
| Perfect Condition | Complete the challenge within 3 rounds | ||
| Key Enemy Info | Bulky Enforcer Bulky Enforcer Bulky Enforcer | ||
| Recommended Squad | Beholder Engine Heavy Striker MK II Medium Patroller Terror Raptor |
Recommended Plug-Ins |
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| Completion Rewards (With Perfect Clear) |
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Simulation Challenge (IV)
| Combat-4 — Simulation Challenge (IV) Nightmare | |||
|---|---|---|---|
| Dream Description | Special Mechanic: Troublemaker-Rank enemies have increased HP and ATK. Only 3 allies can be deployed in this battle. However, at the start of each turn, allies restore 40 extra Energy and gain 3 stacks of a buff (increasing DMG dealt and reducing DMG taken). | ||
| Perfect Condition | Complete the challenge without support allies | ||
| Key Enemy Info | Rampant Brute Bulky Enforcer Bulky Enforcer | ||
| Recommended Squad | Heavy Striker MK II Terror Raptor Thracian |
Recommended Plug-Ins |
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| Completion Rewards (With Perfect Clear) |
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Simulation Challenge (V)
| Combat-5 — Simulation Challenge (V) Hard | |||
|---|---|---|---|
| Dream Description | Special Mechanic: At the start of each turn, allies receive a Mark. If already marked, they instead receive 3 stacks of a CRIT buff (increasing CRIT Rate and CRIT DMG). | ||
| Perfect Condition | Complete the challenge within 3 rounds | ||
| Key Enemy Info | Medium Patroller Frenzied Maniac Frenzied Maniac Frenzied Maniac | ||
| Recommended Squad | Medium Patroller Flame Dreamer Flame Dreamer Bulky Enforcer Rampant Brute |
Recommended Plug-Ins |
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| Completion Rewards (With Perfect Clear) |
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Simulation Challenge (VI)
| Combat-6 — Simulation Challenge (VI) Nightmare | |||
|---|---|---|---|
| Dream Description | Special Mechanic: Troublemaker-Rank enemies have increased HP and ATK. Each time enemies land a hit, they apply a Mark to allies, dealing increased DMG to all allies with a Mark. When a Mark is removed, allies recover HP. | ||
| Perfect Condition | Complete the challenge within 5 rounds | ||
| Key Enemy Info | Notorious - Dead End Butcher Frenzied Maniac Dullahan - Energized Dullahan - Energized | ||
| Recommended Squad | Bulky Enforcer Rampant Brute |
Recommended Plug-Ins |
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| Completion Rewards (With Perfect Clear) |
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Other Languages
Dream Investigation
| Language | Official Name |
|---|---|
| English | Dream Investigation |
| Chinese (Simplified) | 入梦调查 |
| Chinese (Traditional) | 入夢調查 |
| Japanese | 夢境調査 |
| Korean | 꿈세계 조사 Kkumsegye Josa |
| Spanish | Investigación onírica |
| French | Enquête onirique |
| Russian | Исследование сна Issledovaniye sna |
| Thai | สำรวจความฝัน |
| Vietnamese | Nhập Mộng Điều Tra |
| German | Traumermittlung |
| Indonesian | Investigasi Mimpi |
| Portuguese | Adentrar Sonho |
Simulation Challenge
| Language | Official Name |
|---|---|
| English | Simulation Challenge |
| Chinese (Simplified) | 模拟挑战 |
| Chinese (Traditional) | 模擬挑戰 |
| Japanese | 模擬挑戦 |
| Korean | 모의 도전 Moui Dojeon |
| Spanish | Desafío de simulación |
| French | Défi en simulation |
| Russian | Испытание симуляции Ispytaniye simulyatsii |
| Thai | แบบจำลองการท้าทาย |
| Vietnamese | Khiêu Chiến Mô Phỏng |
| German | Simulierte Herausforderung |
| Indonesian | Tantangan Simulasi |
| Portuguese | Desafio de Simulação |



























