This guide covers how to clear Nightmare 1-30 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 1-30
Difficult Without Proper Team Comp

Nightmare 1-30 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 1-30, the enemies may appear weak, but the Nightmare Slimes can heal their entire team for 25–50% of their max HP. They can also
Strategy & Tips
Crowd Control is Effective

Instead of reducing enemy healing, you can bring heroes with AoE
Healing Reduction

To clear Nightmare 1-30, you’ll need to either prevent or reduce enemy healing. Ace is an excellent F2P option who is obtainable early in the game and performs well in Physical Teams as a Debuffer.
HP Alteration

Inflicting
Death Teams

If you have Kris, running a
▼Click for Recommended Heroes for Nightmare 1-30
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 1-30. 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. |
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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 1-30 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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Nightmare 1-30 Recommended Heroes
Crowd Control
| Recommended Hero | Details |
|---|---|
Yu Shin | Yu Shin is an excellent Recommended Set: Gatekeeper/Spellweaver |
Eileene | Eileen is a more offense-oriented Recommended Set: Gatekeeper/Spellweaver |
Kagura | Kagura is a strong alternative to Eileen for Physical Teams, offering both Critical Damage and Recommended Set: Gatekeeper/Spellweaver |
Healing Reduction
| Recommended Hero | Details |
|---|---|
Mercure | Mercure is a powerful hero with great utility. He can Recommended Set: Gatekeeper/Spellweaver |
Ace | Ace's skills are highly valuable in Nightmare 1-30. He inflicts Recommended Set: Vanguard/Gatekeeper |
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 Recommended Set: Guardian |
Li | Li's Recommended Set: Gatekeeper |
Death
| Recommended Hero | Details |
|---|---|
Kris | Kris is the core of any Recommended Set: Gatekeeper/Spellweaver |
Knox | Similar to Kris, Knox is used to inflict Recommended Set: Gatekeeper/Spellweaver |
Continuous Healing & Barrier
| Recommended Hero | Details |
|---|---|
Evan | Evan grants all allies Recommended Set: Guardian |
Yui | Yui is the top recommended support for Adventure stages. She provides Recommended Set: Paladin/Gatekeeper |
Lina | Lina provides a 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 Recommended Set: Assassin or Avenger (T6) |
Yeonhee | Yeonhee is a Magic Damage hero with a Defense-Ignoring 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 Recommended Set: Assassin |
Sub-DPS & Utility
| Recommended Hero | Details |
|---|---|
Biscuit | Biscuit provides excellent utility with her Defense Debuff, Recommended Set: Vanguard/Gatekeeper |
Ace | Ace's skills are highly valuable in Nightmare 1-30. He inflicts Recommended Set: Vanguard/Gatekeeper |
Rachel | She grants all allies a Recommended Set: Vanguard/Gatekeeper |
Nightmare 1-30 Team Formation Example
Physical Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
EvanTank | YuiHealer | Eileene Kagura | Biscuit AceDef Debuffer | TeoDamage Dealer |
For Physical-centeric teams, 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
Magic Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
LinaHealer | Mercure Magic Flux Flex Slot | Vanessa BiscuitDef Debuffer (Flex Slot) | Yu Shin Rin PlatinFlex Slot | YeonheeDamage 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.
Death Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
Evan Rudy PlatinTank | Yui Alice LinaHealer | Eileene Kagura Yu Shin | KnoxInflict | KrisInflict |
When using a
Related Seven Knights Re: BIRTH Articles
Ranking Articles
| Ranking Articles | ||
|---|---|---|
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Radgrid
Bai Long
Xiao
Trude
Mon
Tue
Wed
Thur
Fri
Sat
Sun
Physical
Magic
Tank
Death
Gaze
Ox
Iron
Fire
Water
Light
Dark
Earth
Gold
Biscuit
Evan
Yui
Lina