Welcome to the most comprehensive guide for Anime Guardians Update 21! This massive Christmas-themed update has completely transformed the game with the introduction of Re Zero units, the challenging God Shield mechanic, and tons of new content. As someone who has spent countless hours testing every aspect of this update, I’m here to share everything you need to dominate the game.

Update 21 Features

FeatureDescriptionPriority Level
Re Zero Units11 new units including Reinhard and Subaru forms⭐⭐⭐⭐⭐
God Shield MechanicNew enemy buff requiring specific counters⭐⭐⭐⭐⭐
Christmas EventLimited-time rewards and capsules⭐⭐⭐⭐
New Game ModesCity of Shattered Forest, Priestella, Roswaal Mansion⭐⭐⭐⭐
Active CodesFree gems and event currency⭐⭐⭐⭐⭐

Complete List of Active Anime Guardians Codes June 2026

Here are all the working codes you need to redeem immediately. I’ve personally tested each one to ensure they work:

Active Codes

CodeRewardsStatus
UPD211 Limit Breaker✅ Active
REINHARDTO10,000 Christmas Coins✅ Active
CHRISTMAS1,000 Trait Reroll + 5 Christmas Capsule✅ Active
REZERO_PART2500 SuperStat Reroll + 500 Stat Reroll✅ Active
NEW_WORLDLINE!1 Limit Breaker✅ Active
3Route_Subaru500 Artifacts Trait Reroll✅ Active
Satella_Evo10,000 Cursed Coins✅ Active
ReZeroP11,000 Trait Reroll✅ Active
BUFF_GAROU_SLIDE1,000 Trait Reroll✅ Active
DELAY_GUARDIANS_20252,000 Trait Reroll + 10,000 Alien Coins✅ Active
UPD_1820,000 Alien Coins✅ Active
OPM_PART120,000 Alien Coins✅ Active
TOURNAMENT250 SuperStat Reroll + 250 Stat Reroll✅ Active

How to Redeem Codes?

  1. Launch Anime Guardians in Roblox
  2. Click the Codes button on the right side menu
  3. Enter the code exactly as shown (case-sensitive)
  4. Hit Redeem Code to claim your rewards
  5. Enjoy your freebies!

Pro Tip: If a code doesn’t work, try switching servers or restarting the game. Sometimes new codes take a few minutes to activate across all servers.

Complete Re Zero Units Guide

Update 21 introduces 11 new Re Zero-themed units that are absolutely game-changing. Here’s everything you need to know:

Top Tier Re Zero Units

Reinhard (Strongest Human) – Limited Unit

  • Rarity: Limited (Event Exclusive)
  • Drop Rate: Extremely Low (0.01%)
  • Role: DPS/Tank Hybrid
  • Why He’s Broken: Reinhard combines incredible damage output with tank capabilities, making him the most versatile unit in the current meta.
  • Best Use Cases: Infinite Mode, Boss Rush, PvP

Subaru Forms – Secret Units

Subaru comes in three powerful forms, each with unique abilities:

  1. Subaru (Greed)
    • Specializes in single-target damage
    • Excellent for boss fights
    • Has self-healing abilities
  2. Subaru (Pride)
    • AoE damage specialist
    • Great for crowd control
    • Higher attack speed than other forms
  3. Subaru (Gluttony)
    • Unique devour mechanic
    • Gains stats from defeated enemies
    • Best for extended runs

Other Notable Re Zero Units

  • Regulus (Alpha Leonis): Another Secret unit with incredible burst damage
  • The Witches: Minerva, Typhon, and others with unique support abilities
  • Emilia: Strong magic DPS with crowd control

How to Get Re Zero Units

Christmas Capsules Method

  1. Farm Christmas Coins through the new event modes
  2. Prioritize City of Shattered Forest for the best coin rates
  3. Use Modifier Cards wisely – Golden Tribute first, then Power Surge
  4. Save Gems specifically for Christmas Capsules

Event Shop Strategy

  • Focus on one unit at a time rather than spreading resources thin
  • Complete daily quests consistently for event currency
  • Join public lobbies for difficult content if you’re undergeared

Gacha Strategy Tips

  • Avoid standard banners during the event – focus on limited-time capsules
  • Use Robux wisely – if you choose to spend, buy capsule spins during bonus events
  • Check pity systems – some capsules have guaranteed drops after certain pulls

God Shield Mechanic: Complete Counter Strategy

The God Shield mechanic is the most challenging new feature in Update 21. Here’s how to master it:

Understanding God Shield

God Shield Effects:

  • Reduces incoming damage by 70%
  • Regenerates 10% of shield when hit
  • Makes enemies extremely tanky
  • Appears in specific game modes (Roswaal Mansion, some infinite waves)

Best Counter Strategies

High Fire Rate Units (Meta Solution)

The most effective counter is using units with high attack speed to overwhelm the shield regeneration:

Recommended Units:

  • Subaru (Pride): Highest attack speed among Re Zero units
  • Emilia: Fast magic attacks
  • Any units with multi-hit abilities

Team Composition for God Shield

Frontline: Reinhard (tank/damage hybrid)

Mid: Subaru (Pride) + High fire rate units

Back: Support units with buffs

Advanced God Shield Tactics

  1. Timing is everything – coordinate unit placements
  2. Use AoE abilities to hit multiple shielded enemies
  3. Stack damage-over-time effects if available
  4. Save ultimate abilities for shielded waves

Common Mistakes to Avoid

  • Don’t rely on burst damage alone – shields will regenerate
  • Avoid slow, heavy-hitting units against shielded enemies
  • Don’t forget about positioning – some units need specific placement

Complete Game Mode Guide

Update 21 introduces three new game modes, each requiring different strategies:

1. City of Shattered Forest (Infinite Mode)

Best For: Farming Christmas Coins and resources

Strategy:

  • Early Game: Focus on Golden Tribute modifier
  • Mid Game: Add Power Surge and Saiya modifiers
  • Late Game: Stack damage modifiers for wave 50+

Pro Tips:

  • Keep your device charged – runs can last hours
  • Use power banks for mobile play
  • Join public lobbies for better survival rates

2. Priestella (30 Waves)

Objective: Protect Reinhard at all costs

Key Points:

  • Reinhard dying = instant loss
  • Focus on crowd control units
  • Save abilities for boss waves
  • Position units to cover all paths

3. Roswaal Mansion (30 Waves)

Difficulty: Hardest mode in Update 21

Challenges:

  • 3-lane complexity with path splits
  • All enemies have God Shield
  • Requires perfect team composition

Winning Strategy:

  1. High fire rate team composition is mandatory
  2. Split units evenly across three lanes
  3. Use support units for attack speed buffs
  4. Save ultimate abilities for final waves

Quality of Life Changes in Update 21

Update 21 isn’t just about new content – it brings significant quality improvements:

Major QOL Updates

  • Direct artifact equipping from inventory
  • New map visuals and improved animations
  • Enhanced daily rewards for F2P players
  • Better UI navigation for menus
  • Improved performance optimization

These Changes Matter Because:

  • Faster progression for new players
  • Less time spent in menus
  • Better visual feedback during gameplay
  • More rewarding daily login experience

Advanced Strategies for Update 21

Resource Management

  • Christmas Coins: Prioritize essential units over cosmetic items
  • Gems: Save for limited-time capsules during events
  • Trait Rerolls: Use on your most-used units first

Team Building Philosophy

  1. Synergy over individual power
  2. Balance between single-target and AoE
  3. Include support units for difficult content
  4. Always have a backup plan for God Shield enemies

Progression Path

  1. Week 1: Focus on getting one strong Re Zero unit
  2. Week 2: Build around your new unit with supports
  3. Week 3: Master God Shield counters
  4. Week 4: Challenge infinite modes with your complete team

Frequently Asked Questions

How often are new codes released?

Based on my observations, new codes typically drop during:

  • Major updates (like Update 21)
  • Holidays and special events
  • Community milestones
  • Server maintenance compensation

Is Reinhard worth the grind?

Absolutely yes. Reinhard is currently the best unit in the game for both offense and defense. His limited status means he’ll likely become trade-only after the event ends, making him extremely valuable.

Can F2P players complete Update 21 content?

Yes, but it requires dedication. Focus on:

  • Daily quests for consistent progression
  • Joining strong public lobbies for difficult content
  • Smart resource management (don’t waste gems)
  • Patience – it will take longer but is achievable

What’s the best way to counter God Shield without high-tier units?

Team composition matters more than individual unit rarity:

  • Use multiple low-cost units with high fire rate
  • Stack attack speed buffs from support units
  • Focus on positioning to maximize damage output
  • Consider carry services from experienced players

How long will the Christmas event last?

Based on previous events, Christmas events typically run 3-4 weeks. I recommend prioritizing essential content first, then cosmetic items if you have time.

Conclusion

Anime Guardians Update 21 is a massive content drop that rewards dedicated players. The combination of powerful Re Zero units, challenging God Shield mechanics, and generous code rewards makes this the perfect time to dive into the game.

Remember to redeem all codes immediately, focus on getting at least one Re Zero unit, and master the God Shield counter strategies. With the information in this guide, you’re well-equipped to dominate everything Update 21 has to offer.