This is a Castle Rush guide for Guardian's Castle in Seven Knights Re:Birth. Covering Monday's Rudy Castle, Best Team, Best Heroes, Strategy, and How to Get the Highest Score in 7K Rebirth.
Table of Contents
Guardian's Castle Overview
| Enemy |  Rudy Rook Chancellor |
| Enemy Attack Type |  Physical |
| Status Effects Inflicted |  Stun |
| Effective Status Effects | None |
| Other Features | - Barrier generation - Applies Link - Physical Attack/Single-Target Skill/5-Target Skill Damage Resistance - Activates Berserk after 30 turns (Damage dealt increases by 50% → increases to 100% → 200% → 500% over turns) |
Guardian's Castle is one of Castle Rush's stages where you face the Seven Knights and earn points. It opens every Monday, and rewards are distributed daily at 12 AM (UST+0) 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 |
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Enemy Info
| Round 1 | ||
|---|---|---|
| Rook | Chancellor | Rook |
| Round 2 | ||
| Rook | Chancellor | Rook |
| Round 3 | ||
| Rook | Rudy | Chancellor |
Rudy in Guardian's Castle uses attacks that inflict Stun and also grant Barriers to himself. Meanwhile, Rook and Chancellor can also inflict Stun and possess Damage Resistance, making this stage difficult to clear without the right team setup.
Castle Rush GuideGuardian's Castle Best Heroes
Stun Immunity
The enemy can inflict Stun, putting you at a major disadvantage if unprepared. Make sure to include a hero who grants or possesses Stun Immunity in your party.
Magic Attacks on 3-4 Enemies
Karma
Rin
Vanessa
CleoWith both skills dealing high-damage 3-enemy attacks, Ruri is the top recommended Magic attacker. On the other hand, Miho can serve as both an attacker and a supporter. Among F2P heroes, Sera is particularly recommended, but a well-raised Legendary hero can be used instead.
Buff Removal
Biscuit
Vanessa
Noho
Joker
Soi
KyleBuff Removal is effective against Rudy's barrier, which he uses during the 3rd round. The heroes listed above are recommended for their multi-target attacks and strong support abilities, but Biscuit, who greatly boosts firepower, is the ideal choice.
Versatile Supporters
Lina
Ace
Yui
EvanBiscuit and Lina are highly versatile supporters who can be used in any Castle Rush. If you don't have them, use Vanessa or Ace for Defense debuffs, and Yui or Evan for healing and durability.
Team Formation Examples
Premium Team
| Front Row | Front Row | Front Row | Front Row | Back Row |
|---|---|---|---|---|
 EvanStun Immunity Tank |  LinaHealer Def Debuffer  YeonheeDef Debuffer Magic Attack |  BiscuitBuff Removal Def Debuffer (Flex Slot) |  MihoDebuffer Sub DPS |  RuriYeonheeMagic Attack Main DPS |
F2P Team
| Front Row | Front Row | Front Row | Front Row | Back Row |
|---|---|---|---|---|
| Evan Stun Immunity Tank |  YuiHealer | Biscuit Joker NohoBuff Removal |  ArielMihoDebuffer Sub DPS |  SeraMagic Attack Main DPS |
Optionally, you can place Miho or Ariel (Sub DPS) in the back row alongside the main DPS when using Balanced Formation, especially if they're well-enhanced.
Guardian's Castle Tips & Strategy
Form Teams Effective Against Rudy
The key to victory is bringing heroes with Magic Attacks, 3-Enemy Target skills, Stun Immunity and Buff Removal to counter Rudy, so adjust your lineup accordingly.
| Guardian's Castle | |
|---|---|
| Boss & Mechanics | Boss Rudy uses attacks that inflict Stun and grant Barriers. |
| Strategy | Bring a hero with Stun Immunity and Buff Removal. |
| Enemy Resistances | All enemies in Rudy's Castle Rush have Physical Resistance, Single-Target Attack Resistance, and Quintuple-Target Attack Resistance. |
| Recommended Heroes | Use Magic damage heroes with Triple-Target Attack skills to maximize points and clear waves efficiently. |
Use Protective Formation
Protective Formation is the recommended setup for Guardian's 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 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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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. |
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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 Magic Heroes with 3-Target Skills
All enemies in Guardian's Castle possess Physical Resistance, Single-Target Attack Resistance, and Quintuple-Target Attack Resistance buffs. To increase damage output and achieve a high score, use Magic-type heroes with Triple-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 offense and buff/debuff instead to maximize score.
| Tips! | If your team struggles, bring a healer, buff remover, or crowd control to survive until the final turn. |
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Related Seven Knights Re: BIRTH Articles
▶Back to Top PageRanking Articles
| Ranking Articles | ||
|---|---|---|
 Best Hero Tier List |  Reroll Tier List |  Best Pet Tier List |
How To Reroll Fast?
Leveling & Ruby Farming Guide
Latest News & Updates
Daily Things to Do
Best Heroes and Teams
Advent Expedition Guide
Best Premium Shop Purchases
Best Low Rarity Heroes
The Root of the Storm Event
Should You Pull for Kyle & Aquila?
Children Chasing Stars Event
Brilliant Pumpkin Baskets Guide
Early Game Guide
Player Rank (Adventurer Skill) Guide
Enhance Guide
Equipment Powerup
Pet Guide
Formation Guide
Guild Guide
Party Guide
Gacha Animation Effects
Accessory Guide
Hero Stats Guide
Arena Guide
Coupon Codes
Infinite Tower Guide
Shop Items to Buy
Fodder Hero Guide
Tower of Trials Guide
7K Chess Guide
Equipment Preset Guide
Battle Statistics Guide
Recommended Relay Purchases Guide
Weakness Hit Guide & What is It?
Error Guide and How to Fix
Guild War Guide
Castle Rush Guide
Fodina Castle Guide
Immortal Castle Guide
Death Castle Guide
Ancient Dragon's Castle
Blizzard Castle Guide
Death Guide
Hell Castle Guide
Destroyer Gaze Guide
Ox King Guide
Iron Devourer
Raid Battle Guide
Burn Guide
Paralysis Guide
Bleed Guide
Freeze Guide
Stun Guide
Petrify Guide
Shock Guide
Sleep Guide
Concussion Guide
Debuff Types Guide
Confusion Guide
Poison Guide
