This is a Castle Rush guide for Hell Castle in Seven Knights Re:Birth. Covering Sunday's Kris Castle Best Team, Best Heroes, Strategy, Tips, and How to Get the Highest Score in 7K Rebirth's Hell Castle.
Table of Contents
Hell Castle Overview

| Enemy | Kris Rook Chancellor |
| Enemy Attack Type | Physical |
| Status Effects Inflicted | Death |
| Effective Status Effects | None |
| Other Features | - Attacking an Enemy other than Kris reduces his Skill Cooldown - Anyone other than Kris has Reduced Damage Taken - Damage Resistance Against 5-target Skills - Activates Berserk after 30 turns (Damage dealt increases by 50% → increases to 100% → 200% → 500% over turns) |
Hell Castle is one of Castle Rush's stages where you face the Seven Knights and earn points. It opens every Sunday, and rewards are distributed daily at 5 PM (PST) based on Guild Rank, which is determined by the total points earned by all members.
Tips! | Guild members who don't participate will not receive rewards. |
|---|
Main Rewards
| Category | Rewards |
|---|---|
| Personal Rewards | Guild Token Gold Key Castle Rush Challenge Medals |
| Guild Rewards | Hero Ticket per Guild Rank Gold Box per Guild Rank Castle Rush Challenge Medals |
| Challenge Missions | Key Bundle Leah Skill Enhancement Stone Gold Rare Hero Selector Hero Summon Voucher |
Castle Rush offers Personal Rewards, Guild Rewards, and Challenge Mission Rewards. For the Guild Reward's Hero Summon Card, higher Ranks increase the chance of obtaining Seven Knights, so work together with your Guild to achieve a high score.
Tips! | You can also exchange 4000 Castle Rush Challenge Medals for a Seven Knights Summon Card at the Guild's Exchange Shop |
|---|
Enemy Info

| Round 1 | ||
|---|---|---|
Rook | Chancellor | Rook |
| Round 2 | ||
Rook | Chancellor | Rook |
| Round 3 | ||
Rook | Kris | Chancellor |
In Hell Castle, Kris uses both single and multi-target skills that can inflict Death for 3 Turns. Meanwhile, Hell Castle's Rook and Chancellor can also inflict Death and reduce Kris' skill cooldown upon being hit, making this stage particularly difficult to clear without a suitable team setup.
Castle Rush GuideHell Castle Best Heroes
Death Immunity
| Only One | |||
|---|---|---|---|
Challenging Hell Castle without Death Immunity will put you at a major disadvantage, so make sure to include Leo. He's currently the only hero who provides Death Immunity.
Single-Target Attackers
All enemies in Hell's Castle have reduced effectiveness on their 5-target attack skills. Attacking the other two enemies will also shorten Kris' skill cooldown, so focus on using single-target attacks instead. Pascal, who has an Ignore Defense skill, is recommended, but if you don’t have him, training the F2P hero Yuri is a good alternative.
Tips! | Sieg has two single-target attacks, and his firepower boost and healing are also useful. He is valuable in the Rudy and Jave battles for his Stun Immunity, so raising him is highly recommended if you want to maximize your Castle Rush score. |
|---|
Focus Target or Weakness Hit Chance
Once you reach the third round, you can either focus all attacks on Kris using Asura to avoid damaging anyone else, or accept the Cooldown Reduction and use Biscuit to boost your attacker's Weakness Hit Chance Boost.
Buffs and Debuffs
Increase your attacker's damage output using buffs and debuffs. It's recommended to apply the ones with the longest duration first.
Team Formation Examples
Premium Team 1
| Front Row | Front Row | Front Row | Front Row | Back Row |
|---|---|---|---|---|
LeoDeath Immunity | LinaHealer Def Debuffer | BiscuitBuff Removal Def Debuffer (Flex Slot) | Miho Espada RachelDebuffer Sub-DPS | Pascal ShaneSingle-Target Main DPS |
F2P Team
| Front Row | Front Row | Front Row | Front Row | Back Row |
|---|---|---|---|---|
LeoDeath Immunity | AsuraFocus Target | YuiHealer | Victoria Miho RachelDebuffer Sub DPS | Yuri ShaneSingle-Target Main DPS |
For the attacker slot, Pascal, the single-target magic attacker with Ignore Defense, is the most recommended choice. For Espada's slot, you can use Miko instead if she’s more developed on your end.
Tips! | When using Biscuit, it's best if your attacker's Weakness Hit Chance is around 50%. Additionally, the higher the Weakness Hit Chance of your other members, the lower the risk of Cooldown Reduction. |
|---|
Hell Castle Tips & Strategy
Form Teams Effective Against Kris

The key to victory is bringing high damage Single-Target heroes with Death Immunity to counter Kris, so adjust your lineup accordingly.
| Hell Castle | |
|---|---|
| Boss & Mechanics | Boss Kris uses attacks that inflict Death, and when Rook and Chancellor are hit, Kris's skill cooldowns are reduced. |
| Strategy | Bring a hero with Death Immunity and a hero who can Focus Target on Kris. |
| Enemy Resistances | All enemies in Kris's Castle Rush have Quintuple-Target Attack Resistance. |
| Recommended Heroes | Use heroes with powerful Single-Target Attack skills to maximize points and efficiently defeat enemies. |
Use Protective Formation

Protective Formation is the recommended setup for Hell Castle. 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 investment 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. |
|---|
Use 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 'Barrier', then use priority skills manually to gain the upper hand. |
|---|
Enhance Your Hero

Enhance your heroes' skills, ultimate, and power-up to +5. Prioritizing tanks and healers to boost their effectiveness and utility. Skill & Ultimate Enhancement materials can be obtained from Story Event rewards, the Shop, and the Infinite Tower.
| Related Articles | ||
|---|---|---|
| Power Up Heroes | Upgrade Equipment | Enhance Formation |
How to Get the Highest Score
Use Powerful Single-Target Skills

All enemies in Kris' Hell Castle have Quintuple-Target Attack Resistance buff. To increase damage output and achieve a high score, use heroes with powerful Single-Target Attack skills.
Sustain is Optional
The core mechanic of Castle Rush is to maximize total damage within the turn limit, as scores are based on the cumulative damage dealt before the final turn. If your team can endure without heavy support, focus on high offense and debuff removal instead to maximize score.
Tips! | If your team struggles, bring a debuffer or crowd control to survive until the final turn. |
|---|
Related Seven Knights Re: BIRTH Articles
Ranking Articles
| Ranking Articles | ||
|---|---|---|
![]() | ![]() | ![]() |
Kris
Rook
Chancellor
Physical
Death
Guild Token
Gold
Key
Castle Rush Challenge Medals
Hero Ticket per Guild Rank
Gold Box per Guild Rank
Key Bundle
Leah
Skill Enhancement Stone
Rare Hero Selector
Hero Summon Voucher
Pascal
Shane
Sieg
Yuri
Biscuit
Asura
Lina
Espada
Miho
Victoria
Ariel
Noho
Leo
Lina
Biscuit
Rachel
Pascal
Shane
Asura
Yui