This guide covers how to clear Nightmare 10-30 in Seven Knights Re:Birth. Including recommended heroes, enemy info, what equipment to use, what type of immunity, and more.
Table of Contents
Overview of Nightmare 10-30
Difficult Without Proper Team Comp
Nightmare 10-30 is difficult to brute force, especially without a balanced team or sufficient gear. Relying solely on high offensive units will not guarantee victory. This stage heavily emphasizes and rewards proper team building, making the right tools and immunities essential for clearing it.
Requires 2 Teams
It’s important to note that Nightmare Mode requires players to set up two separate teams per stage. This means you’ll need to raise more heroes and carefully balance both teams to ensure consistent clears.
Enemy Info
In Nightmare 10-30, the main threat is Nia, who can increase your team’s skill cooldowns by 120 seconds. If she successfully lands this skill, the run is usually over and requires a reset. To clear this stage, either use Crowd Control to prevent her from casting or burst Nia down quickly.
Nightmare 10-30 Recommended Heroes
Immunities
| Recommended Hero | Details |
|---|---|
| Chloe | Chloe provides Shock Immunity to all allies, which is useful for Wave 1. She also offers Debuff Removal and offensive buffs, making her a solid support option for certain teams. Recommended Set: Assassin/Gatekeeper |
| Leo | Leo is essential for Nightmare 10-30 Wave 2, as he provides Death Immunity to the team. With two enemy Kris present, surviving without Death Immunity or consistent Debuff Removal becomes extremely difficult. Recommended Set: Assassin/Gatekeeper |
Crowd Control
| Recommended Hero | Details |
|---|---|
| Yu Shin | Yu Shin is an excellent Crowd Control hero who provides a team-wide Effect Hit Rate boost. He also gains two turns of All Damage Immunity, greatly improving his survivability. His skills can inflict Paralysis on either all enemies or up to three targets. Recommended Set: Gatekeeper/Spellweaver |
| Mercure | Mercure is a powerful hero with great utility. He can Stun all enemies, inflict Incoming Healing Reduction, and apply Magic Flux when three Magic heroes are in the team. Magic Flux deals 12% of the target’s max HP (up to 90% of the caster’s Attack) and stacks up to seven times. His passive reduces enemy Effect Resistance and limits incoming damage to 40% of his max HP, improving survivability. Recommended Set: Gatekeeper/Spellweaver |
| Eileene | Eileene is a more offense-oriented Crowd Control hero who provides a team-wide Physical Attack boost, making her a strong pick for physical teams. Recommended Set: Gatekeeper/Spellweaver |
| Kagura | Kagura is a strong alternative to Eileene for Physical Teams, offering both Critical Damage and Physical Damage boosts from her passive. She can also inflict Petrify preventing the enemy from applying All Damage Immunities. Recommended Set: Gatekeeper/Spellweaver |
HP Alteration
| Recommended Hero | Details |
|---|---|
| Platin | While Platin may not provide much in PvE content, he is still a decent choice as a tank when you need extra damage with HP Alteration alongside Buff Removal. Recommended Set: Guardian |
| Li | Li's Taunt skill grants two hits of Physical Damage Immunity. Additionally, his passive lets him counterattack while healing based on his Max HP, and his HP Alteration skill can set an enemy’s HP to 28%, making him invaluable for tough encounters. Recommended Set: Gatekeeper |
Death
| Recommended Hero | Details |
|---|---|
| Kris | Kris is the core of any Death Team, allowing you to clear stages without relying on high damage output. Recommended Set: Gatekeeper/Spellweaver |
| Knox | Similar to Kris, Knox is used to inflict Death on enemies. His passive increases the Death infliction rate, making him an excellent support hero for Kris in Death Teams. Recommended Set: Gatekeeper/Spellweaver |
| Aquila | Aquila is the newest addition to the Death Team. She can inflict Death with her Skill 2 and reduce the Death Turn count by 2 with Skill 1, greatly speeding up Death Team clears. She also provides the Link buff for the entire team, significantly boosting overall survivability. Recommended Set: Gatekeeper/Spellweaver |
Continuous Healing & Barrier
| Recommended Hero | Details |
|---|---|
| Evan | Evan grants all allies Stun Immunity and provides a Barrier and Defense Boost to the entire team. It's advisable to have his skills enhanced. Alternatively, if you have two healers, you can swap him out for an additional DPS. Recommended Set: Guardian |
| Yui | Yui is the top recommended support for Adventure stages. She provides continuous healing, greatly boosting team survivability. Enhancing her healing skill for an extra turn is highly recommended. Recommended Set: Paladin/Gatekeeper |
| Lina | Lina provides a Damage Boost and Continuous Healing. Paired with Yui, they ensure consistent team healing throughout the battle. Lina doesn't require any Skill Enhancement. Recommended Set: Paladin/Gatekeeper |
Damage Dealer (DPS)
| Recommended Hero | Details |
|---|---|
| Teo | Most recommended DPS for this Adventure level. His skills deal high damage to all enemies, and with Immortality and All Damage Nullification, his survivability is high. Two Skill Enhancements are recommended but optional. Recommended Set: Assassin or Avenger (T6) |
| Kyle | Another top contender for best Physical DPS, Kyle’s skills feature exceptional damage scaling, and his passive deals a percentage of the enemy’s Max HP every two attacks. He performs best when paired with two other Attack Type heroes and gains an additional 27% Crit Rate from his passive, making him very easy to build. Recommended Set: Assassin |
| Yeonhee | Yeonhee is a Magic Damage hero with a Defense-Ignoring Triple-Target Attack. She is an excellent DPS, capable of inflicting Sleep, and provides Magic Attack Boost to all allies while granting All Damage Nullification to herself. Recommended Set: Assassin |
| Klahan | Klahan has skills that target all enemies with decent damage. When an enemy's HP drops below 50%, he deals additional piercing damage. He also inflicts Damage Reduction on enemies and grants himself a Physical Attack Boost. Recommended Set: Assassin |
Sub-DPS & Utility
| Recommended Hero | Details |
|---|---|
 Biscuit | Biscuit provides excellent utility with her Defense Debuff, Buff Removal, and Weakness Hit Chance Boost, making her a strong addition to almost any team. Recommended Set: Vanguard/Gatekeeper |
| Ace | Ace's skills are highly valuable in Nightmare 10-30. He inflicts Defense Reduction, Physical Vulnerability, Buff Duration Reduction, and Reduced Incoming Healing, creating opportunities for your team to deal higher damage and complete the run faster. Recommended Set: Vanguard/Gatekeeper |
| Rachel | She grants all allies a Weakness Hit Chance Boost and inflicts Defense Reduction and Physical Vulnerability on 3 targets. While one of her skills targets only a single enemy, her self-revive greatly enhances her survivability. Recommended Set: Vanguard/Gatekeeper |
Nightmare 10-30 Team Formation Example
Depends on Your Roster
As Nightmare requires two teams to clear, the best heroes to bring for each team will vary. However, the Mercure Magic and Death teams stand out among the rest.
With Mercure teams with Platin excelling in damage and Crowd Control while Death teams focus on survivability and clearing enemies through the Death debuff.
Mercure-Platin Teams
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
 LinaHealer | Mercure Magic Flux | Platin HP Alteration | Yu Shin Crowd Control | Yeonhee Damage Dealer |
This is a great team for 10-30 Wave 1, with Yu Shin serving as the main Crowd Control hero to stun both Nias. Platin follows up with HP Alteration, which often targets both due to their higher number of buffs. Note that this team has limited flexibility, as you’ll need three Magic heroes to activate Magic Flux while maintaining Crowd Control Skills.
Magic Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
| Lina Healer | Mercure Magic Flux Flex Slot | VanessaBiscuitLeo Debuffer/Immunity (Flex Slot) | Yu ShinRin Flex Slot | Yeonhee Damage Dealer |
For Magic teams, Mercure is highly recommended for his Magic Flux effect, which can easily carry your team through early Nightmare stages. Note that Mercure requires three Magic-type allies to activate Magic Flux.
Physical Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
 EvanTank |  YuiHealer | EileeneKagura Crowd Control/Buffer | BiscuitAceLeo Debuffer/Immunity (Flex Slot) | TeoKyle Damage Dealer |
For Physical-centric teams, Kyle, Teo,or Klahan are recommended as primary damage dealers due to their high damage output. Kagura and Eileene complement them well by providing strong damage buffs and applying Crowd Control effects to enemies.
Death Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
| EvanRudyPlatin Tank | YuiAliceLina Healer | EileeneKagura Yu Shin Crowd Control | KnoxAquila Inflict Death Death Support | Kris Inflict Death |
When using a Death Team, prioritize survivability over damage. The Death debuff will automatically defeat enemies after 3 turns or once they reach 2 stacks, making endurance the key to victory.
While Knox and Aquila can be used together, it’s generally better to choose one. Knox boosts Death Effect success rates for consistency, while Aquila enhances survivability with Link and shortens Death Turn count for faster clears.
Strategy & Tips
Crowd Control and Focus on Nia
Clearing Nightmare 10-30 largely depends on defeating Nia before she increases your team’s cooldowns. It’s best to reset the stage until both Nias are inflicted with a Crowd Control Effect early in the fight.
Immunities for One Wave
For Wave 2 of 10-30, having Death Immunity or Debuff Removal is crucial to prevent your team from being defeated by Kris’ Death Effect. Alternatively, Chloe can be used in Wave 1 to provide Shock Immunity, though the best strategy is still to burst down Nia quickly to stop her from using her skills.
Additional Effects
On top of the usual skill effects, enemies in Nightmare Mode will also have additional effects. Nia in Wave 2 can increase your team’s cooldowns by 120 seconds instead of 16. If this skill lands early in the battle, it’s best to restart the run.
Crowd Control is Effective
Enemies in 10-30 have varying Effect Resistance. In Wave 1, enemies have 0 Effect Resistance, allowing you to focus purely on survivability and damage. In contrast, Wave 2 enemies have a high 32% Effect Resistance, making it essential for your Crowd Control and Death heroes to have enough Effect Hit Rate to land their debuffs.
HP Alteration
Inflicting HP Alteration is an effective way to deal damage, as it sets enemies' HP to a fixed threshold, ignoring both their HP and defense. Platin stands out as a strong option for this role, serving as both a tank and a source of HP Alteration. This effect also ignores All Damage Immunity, allowing you to use this effect while the buff is active.
Platin Excels in 10-30
Platin’s HP Alteration skill targets the enemy with the most buffs, making it highly effective in Wave 1 since Nia usually has the most buffs from her shield.
Death Teams
If you have Kris, running a Death Team is a strong alternative. This setup lets you bypass enemy mechanics and stats entirely by instantly defeating them after 3 turns or once 2 stacks of Death are applied.
▼Click for Recommended Heroes for Nightmare 10-30
Enhance Hero Skills
Enhance your heroes' skills, prioritizing tanks and healers to boost their effectiveness and utility. Skill Enhancement materials can be obtained from Story Event rewards, the Shop, and the Infinite Tower.
Skill Enhancement GuideUse Protective Formation
Protective Formation is the recommended setup for Nightmare 10-30. At Level 20, it boosts Back Row heroes' Attack by 26% and grants Front Row supports and healers a 6.5% Defense increase. Other formations can also work but require more investments into your characters and gear.
 Tips! | Make sure to enhance the formation level for increased back row and front row effect. The higher the Formation level, the better. |
|---|
Ultimate Enhance Your Team
If you have an Ultimate Enhancement Material, Leah, or spare Fusion fodder, it’s worth investing in adding a weapon slot to your strongest 6★ Legendary DPS or an armor slot to other team members. Nightmare 10-30 is extremely difficult without Ultimate Enhancements, so make sure your core heroes are at least fully enhanced to maximize their survivability and damage output.
Ultimate Enhancement GuideRuby Farm for Fusion Fodder
Once 14-1 or Nightmare 1-1 becomes available, players should begin Ruby Farming to gather enough fodder for fully Ultimate Enhancing their team. This greatly improves survivability and makes clearing stages much easier.
Ruby Farming GuideUse Skill Queue
Auto Skills offer convenience, but they don't always select the optimal skills in critical situations. It's best to use the Skill Queue to start with a buff, then monitor combat and manually activate skills as needed.
| Tips! | Strategically, queue buffs first, such as 'Shield', then use priority skills manually to gain the upper hand. |
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Related Seven Knights Re: BIRTH Articles
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How To Reroll Fast?
Leveling & Ruby Farming Guide
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The Root of the Storm Event
Should You Pull for Kyle & Aquila?
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