This is a guide on Nightmare Mode in Seven Knights Re:BIRTH (7K Rebirth). Read on to learn about what is nightmare mode, how to unlock, should you prioritize it, and tips!
Table of Contents
What is Nightmare Mode
Tougher Version Of Story Stages

Nightmare Mode is a tougher version of the story stages, featuring stronger enemies and rewarding players with valuable items like Accessories.
How to Unlock Nightmare Mode
Clear Chapter 14-50

You can unlock Nightmare Mode by completing Story Chapter 14-50. Once unlocked, this difficulty becomes available for story stages, featuring enemies with much higher stats than in Normal.
Also Unlocks Chapter 15-1
Completing Chapter 14-50 also unlocks 15-1, allowing you to progress through the Expedition Event.
Tips and Tricks
Nightmare Mode Requires Two Teams

It's important to note that Nightmare Mode requires the player to setup 2 separate teams per stage. This means you will need at least 2 significantly enhanced characters, before you can efficiently Repeat Battle Nightmare stages.
How to Upgrade CharactersHigher Key Cost

Nightmare Mode requires 12 keys per entry, twice the cost of regular Story stages. Make sure to stock up on key bundles so you don’t run out while progressing.
Recommended Heroes for Ruby Farming

When farming Rubies in 1-1 or Nightmare Mode, it’s important to have two damage dealers capable of clearing each stage independently.
Heroes | Recommendations |
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![]() | - All skills target all enemies - Has a Self Revive - All Damage Nullification (3 hits) |
![]() | - Skills target 3 or all enemies - Has Crowd Control Effects (Sleep) - All Damage Nullification (3 hits) |
Should you Prioritize Nightmare Mode
Depends on Your Roster

Which mode to prioritize depends on your roster. If your team can handle Nightmare Mode efficiently, focusing on it can be rewarding thanks to Accessory drops.
Accessories are not Guaranteed

It's worth noting that Accessories are not a guaranteed drop and there is a 100-clear pity in place in case players are unlucky with accessory drops.
![]() | Players will need to consume 1,200 Keys at worst before they can guarantee an Accessory drop, since Nightmare stages consume 12 keys each. |
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Efficiency can Vary

When farming Rubies in Nightmare stages, having a strong damage dealers is crucial. Since you’ll be using one damage dealer for each team, ensure both damage dealers can clear the enemies to maximize rewards.
Can be Done Simultaniously
Progressing through Nightmare Mode doesn’t prevent you from playing Chapter 15-1. You can switch back to regular story stages anytime to continue progressing in the Expedition Event.
Related Seven Knights Re: BIRTH Articles
Ranking Articles
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Recommended Articles
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Legendary Characters
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Seven Knights of the Old | |||
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Apprentice Priest | |||
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Four Lords | |||
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Four Lords of Old | |||
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Night Crow | |||
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Hidden Masters | |||
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Adventurer | |||
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Terra | |||
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Holy Cross Crusaders | |||
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Shadow Clan | |||
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Purgatory | |||
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Moonlit Isle | |||
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Eastern Aisha | |||
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Sanctuary of Darkness | |||
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