Welcome to the most comprehensive guide for Universal Tower Defense Update 0.5, also known as the “Hollowed Eclipse” update! This is arguably the biggest patch the game has ever received, introducing game-changing endgame content, powerful new units, revolutionary progression systems, and quality-of-life improvements that will transform how you play forever.
Whether you’re a veteran player looking to dominate the new raids or a newcomer wanting to understand what all the hype is about, this guide will walk you through every single aspect of Update 0.5. I’ve spent dozens of hours testing every new feature, grinding the raids, and analyzing the meta shifts so you don’t have to.
Quick Overview: What’s New in Update 0.5?
| Feature Category | Major Additions | Impact Level |
|---|---|---|
| New Game Modes | Raids (Hueco Fortress), Boss Rush | 🔥 GAME-CHANGING |
| New Units | 6 New Units + Evolved Forms | 🔥 GAME-CHANGING |
| Progression Systems | Shiny Transfer, Etherealization Shards, Stat Transfer | 💎 REVOLUTIONARY |
| Relic System | Tag Perks, Star Ratings, New Sets | ⚡ META-SHIFTING |
| Quality of Life | Global Matchmaking, Music Sets, Relic Dust | 💫 IMPROVEMENTS |
New Game Modes: The Endgame Revolution
🏰 Raids: Hueco Fortress Endgame Content
Raids are the absolute crown jewel of Update 0.5, introducing the first true endgame mode in Universal Tower Defense. This high-difficulty challenge pits you against increasingly powerful bosses as you climb the Hueco Fortress, a nightmarish ruined castle filled with vengeful spirits and legendary warriors.
How Raids Work:
- Each successful raid run rewards you with special raid currency
- Spend currency in the exclusive Raid Shop for unique rewards
- Difficulty scales dramatically with each floor cleared
- Bosses have unique mechanics that require strategic team composition
Raid Shop Rewards Include:
- Exclusive Raid Unit (only obtainable through raids)
- Trait Rerolls and Stat Rerolls
- High-value progression items not available elsewhere
- Spirit Tokens for advanced upgrades
Pro Tip: Focus on building teams with Hollow and Reaper tag units, as they receive significant bonuses from the new Shadow Reaper relic set specifically designed for raid content.
⚔️ Boss Rush Mode: Ultimate Challenge
Boss Rush is the ultimate test of your team’s strength and endurance. Unlike regular modes where you face waves of regular enemies, Boss Rush throws you directly into consecutive boss battles with no breaks or easy waves to catch your breath.
Boss Rush Features:
- Back-to-back boss encounters with increasing difficulty
- No healing or respawning between bosses
- Exclusive rewards including rare relics and evolution materials
- Leaderboard system for competitive players
Strategy Tip: Build teams with high burst damage and crowd control. Units with Eternal trait are particularly effective here due to their recent buff, offering massive scaling damage per wave.
All New Units in Update 0.5 (June 2026)
The Hollowed Eclipse update introduces six brand-new units inspired by the Bleach universe, each with unique abilities and evolved forms that will redefine the current meta.
🌟 New Mythic Units
| Unit | Rarity | Special Ability | Best Use Case |
|---|---|---|---|
| Koyote | Mythic | Number One Evolution | High DPS, Raid Content |
| Ultiorra | Mythic | Oblivion Evolution | Boss Killer, AoE Damage |
| Tierabel | Mythic | Hydro Evolution | Support, Healing |
| Nellee | Mythic | Primal Evolution | Tank, Crowd Control |
💎 New Exclusive & Secret Units
| Unit | Rarity | Acquisition Method | Evolution |
|---|---|---|---|
| Grommjaw | Exclusive | Raid Shop | Panther Evolution |
| Ichiko | Secret | Special Quest | Rage Evolution |
✨ Shiny Variants & Evolution System
Every new unit comes with a Shiny variant that offers enhanced stats and unique visual effects. The evolution system has been completely overhauled for Update 0.5:
Evolution Requirements:
- Base Unit + Evolution Item + Gold = Evolved Unit
- Each evolution dramatically changes abilities and stats
- Evolved units are essential for raid content
Evolution Items Breakdown:
- 6 new evolution items introduced specifically for Update 0.5 units
- Obtainable through raids, boss rush, and high-level story modes
- Some items require Spirit Tokens for purchase
Revolutionary Progression Systems
Update 0.5 introduces several game-changing systems that dramatically reduce the grind and give players more control over their progression.
🔮 Etherealization Shards: End the RNG Nightmare
This is perhaps the most requested feature in Universal Tower Defense history. Etherealization Shards allow you to etherealize units without pulling the same unit multiple times, effectively eliminating the worst aspects of gacha RNG.
How to Obtain Shards:
- Sacrifice a unit of the same rarity
- Pay large amounts of in-game currency
- Raid rewards and special events
Shard Types:
- Mythic Etherealization Shard – For mythic units
- Secret Etherealization Shard – For secret units
- Exclusive Etherealization Shard – For exclusive units
Cost Analysis: While expensive, this system is infinitely better than pulling hundreds of times hoping for duplicates. For dedicated players, this is a game-changer that makes building your dream team actually achievable.
🔄 Shiny Transfer & Shiny Normalization
Two interconnected systems that give you unprecedented control over your shiny units:
Shiny Transfer:
- Move shiny status between units of the same type
- Cost: Relic Dust + Gold
- Perfect for when you pull a better stat version of a unit you already have shiny
Shiny Normalization:
- Convert extra shiny units into Trait Rerolls
- Rate: 1 Shiny Unit = 10-15 Trait Rerolls (varies by rarity)
- Great for dealing with unwanted shiny duplicates
📊 Stat Transfer System
Move stats between units to create the perfect combination:
Stat Transfer Rules:
- Transfer stats from one unit to another of the same type
- Original unit is consumed in the process
- Cost: Gold + Spirit Tokens
- 100% success rate – no RNG involved
Strategic Use: This system is perfect for min-maxing your units. Pull a unit with amazing stats but wrong traits? Pull another with perfect traits but bad stats? Now you can combine them into one perfect unit!
New Relic System: Tag Perks & Star Ratings
The relic system has been completely overhauled with the introduction of Tag Perks and Star Ratings, creating deeper build diversity and strategic complexity.
🏷️ Tag Perks System
Relics now come with Tag Perks that provide bonuses if your unit matches specific tags. If a unit matches all listed tags, it receives every perk from the relic.
Example Tag Combinations:
- Peroxide + Reaper = Cooldown Reduction + Crit Damage
- Rage + Hollow = Elemental Damage + Armor Penetration
- Support + Hybrid = Range Increase + Healing Boost
Strategic Building: This system encourages building teams around specific tag combinations rather than just individual unit power. The right relic can make a B-tier unit perform like an S-tier unit.
⭐ Star Rating System
Relics obtained from raids can roll Star Ratings that boost their stats beyond normal mythic values:
Star Rating Breakdown:
- ⭐ 1 Star = 10% stat increase
- ⭐⭐ 2 Stars = 25% stat increase
- ⭐⭐⭐ 3 Stars = 50% stat increase
- ⭐⭐⭐⭐ 4 Stars = 100% stat increase (double power!)
Farming Strategy: Focus on raid content to obtain high-star relics. A 4-star common relic can outperform a regular mythic relic in many situations.
🌑 New Relic Sets
Two major new relic sets dominate the Update 0.5 meta:
Shadow Reaper Relic Set
Full Set Bonus: Cooldown reduction and range increase
Tag Perks:
- Peroxide Units: 15% cooldown reduction
- Reaper Units: 20% crit damage
- Rage Units: 25% elemental damage
- Hollow Units: 30% armor penetration
Best For: Raid content and boss battles
Reaper Relic Set
Full Set Bonus: Damage, range, crit rate, and crit damage
Tag Perks:
- Crit Build Focus: Massive crit rate and damage bonuses
- Range Scaling: Up to 50% range increase
- Hyper Armor: Additional damage against armored enemies
Best For: General content and wave clearing
Trait Rebalance: Meta-Shifting Changes
Update 0.5 brought significant changes to the trait system, with some traits receiving major buffs and complete reworks.
⚡ Eternal Trait (Major Buff)
The Eternal trait has been transformed from a niche choice to one of the best traits in the game:
Changes:
- Reduced cooldown by 50%
- Increased scaling for damage and range per wave
- No placement limits in certain modes
- Late-game scaling now reaches unprecedented levels
Best Units for Eternal: Koyote, Ultiorra, and other high-DPS units
🌟 Astral Trait (Complete Rework)
The Astral trait has been completely reworked to focus on a different playstyle:
New Mechanics:
- Affliction duration increased by 100%
- Cooldown reduction for affliction abilities
- Stacking DOT effects that scale with time
- Placement limits removed for most units
Strategic Impact: This makes Astral viable for many more units instead of just a few top-tier choices.
Active Universal Tower Defense Codes (June 2026)
Here’s the complete list of working codes for Update 0.5. I’ve personally tested each one to ensure they’re valid as of June 2026.
| Code | Rewards | Level Requirement | Status |
|---|---|---|---|
| ILoveUTD! | 50 Trait Rerolls, 2000 Gems | Level 25 | ✅ NEW |
| PeroxideUpd! | 25 Trait Rerolls, 2500 Gems, 10000 Gold | Level 15 | ✅ NEW |
| SmallGift | 10 Trait Rerolls, 1000 Gems | None | ✅ NEW |
| Update 0.5 | 25 Trait Rerolls, 5000 Gems | Level 5 | ✅ NEW |
| NewYear26! | 50 Trait Rerolls, 30 Stat Rerolls, 15 Locks | Level 50 | ✅ NEW |
| InterestedIn0.5! | 25 Trait Rerolls | Level 15 | ✅ NEW |
| MaintenanceTomorrow_0.5! | 50 Rerolls | None | ✅ Working |
| MerryChristmas | 100 Trait Rerolls, 10 Stat Rerolls, 10 Locks | None | ✅ Working |
Additional Working Codes (June 2026)
| Code | Rewards | Level Requirement |
|---|---|---|
| YT10k! | 2000 Gems | None |
| ThankYou30M | 500 Gems, 15 Trait Rerolls | Level 15 |
| UnrivaledIsAlive | 800 Gems, 20 Trait Rerolls | None |
| ThankYouFor150k | 1500 Gems, 50 Trait Rerolls | None |
| ThankYou100k | 100 Trait Rerolls | Level 50 |
| HereyougoEA! | 2000 Gems, 20 Trait Rerolls, 5 Stat Locks | Early Access Only |
| ThousandsOfCodes! | 800 Gems, 15 Trait Rerolls | None |
| MaxedOut! | 600 Gems, 10 Trait Rerolls | Level 5 |
| SixSeven! | 67 Trait Rerolls | None |
| FixingBugs! | 450 Gems, 25 Trait Rerolls | None |
| 75kLikes! | 400 Gems, 10 Trait Rerolls | None |
| NumberOne! | 500 Gems, 15 Trait Rerolls | None |
| Universal! | 450 Gems, 15 Trait Rerolls | None |
| Mainstream! | 450 Gems, 15 Trait Rerolls | None |
| ThankYouUTD! | 400 Gems, 5 Trait Rerolls | None |
| 40kCCU! | 4000 Gems, 40 Trait Rerolls | None |
| RELEASE! | 400 Gems | None |
| THANKYOU! | 400 Gems | None |
| UNRIVALED! | 200 Gems, 5 Trait Rerolls | None |
| SorryEA! | 100 Trait Rerolls | None |
| SorryEA2! | 5000 Gems | None |
How to Redeem Codes?
- Launch Universal Tower Defense in Roblox
- Click the Codes button on the right side of your screen
- Type or paste the code into the text box
- Press Redeem and enjoy your rewards!
Pro Tip: Copy and paste codes directly to avoid typos. Some codes are case-sensitive!
Quality of Life Improvements
Update 0.5 includes several smaller but impactful quality-of-life changes:
🎵 Music Sets
- Customize lobby music with new music sets
- Unlock through gameplay or purchase with gems
- Different themes for different moods
🌍 Global Matchmaking
- Faster matchmaking with players worldwide
- Reduced wait times for all game modes
- Better connection stability
💨 Relic Dust System
- Sell unwanted relics for Relic Dust
- Use dust for upgrades and special purchases
- Better inventory management
New Shop Bundles
All old bundles have been replaced with new ones that offer better value:
| Bundle | Cost | Contents | Value |
|---|---|---|---|
| Urohoro Bundle | 79 Robux | Stat Locks, rerolls, gold, fragments | 💰 Good Value |
| Substitute Reaper Bundle | 999 Robux | Gems, gold, rerolls | 💰 Great Value |
| Hollow Bundle | 4,999 Robux | Emotes, large gem/gold rewards, rerolls | 💎 Premium |
| Soul Captain Bundle | 9,999 Robux | Massive resources, lucky potions, exclusive cosmetics | 👑 Ultimate |
Strategy Guide: Dominating Update 0.5
Early Game Strategy (Levels 1-50)
Priority Focus:
- Redeem all codes immediately for starting resources
- Focus on story progression to unlock basic units
- Build a balanced team with 1-2 DPS, 1 tank, 1 support
- Save gems for Update 0.5 units when available
Recommended Team Composition:
- DPS: Any available mythic unit
- Tank: High HP unit with taunt abilities
- Support: Healing or buffing unit
- Flex: Unit that can fill multiple roles
Mid Game Strategy (Levels 50-100)
Priority Focus:
- Start raid preparation by building raid-viable units
- Farm relics in challenge modes
- Begin shiny hunting for key units
- Join Discord community for trading and strategies
Raid Preparation Checklist:
- At least 2 evolved units
- Relics with appropriate tag perks
- Understanding of boss mechanics
- Sufficient gold for unit upgrades
End Game Strategy (Levels 100+)
Priority Focus:
- Master raid content for exclusive rewards
- Optimize relic builds with star ratings
- Complete Boss Rush for leaderboard positions
- Min-max units with new transfer systems
Advanced Tips:
- Use Stat Transfer to create perfect units
- Farm high-star relics in raids
- Experiment with tag combinations for unique builds
- Participate in community events for exclusive rewards
Common Mistakes to Avoid
🚫 Code Mistakes
- Don’t wait too long to redeem codes – they expire quickly
- Check level requirements before attempting to redeem
- Copy-paste codes to avoid typos
🚫 Progression Mistakes
- Don’t waste gems on early game summons
- Save evolution materials for Update 0.5 units
- Don’t ignore relic farming – it’s crucial for endgame
🚫 Raid Mistakes
- Don’t attempt raids without proper preparation
- Learn boss patterns before attempting high floors
- Don’t go solo if struggling – find teammates
Frequently Asked Questions
Q: What are the best units for raids in Update 0.5?
A: The best raid units are Koyote (Number One), Ultiorra (Oblivion), and Grommjaw (Panther). These units have the right tag combinations for the Shadow Reaper relic set and excel at boss damage.
Q: How often are new codes released?
A: New codes are typically released during major updates, milestone celebrations, and special events. Update 0.5 brought multiple new codes, and more are expected throughout June 2026.
Q: What’s the fastest way to get Spirit Tokens?
A: The fastest way to get Spirit Tokens is through raid completion and Boss Rush mode. Higher difficulty levels reward more tokens.
Q: Are the new units worth grinding for?
A: Absolutely! The Update 0.5 units are meta-defining and essential for endgame content. Units like Koyote and Ultiorra are among the best in the game right now.
Q: How do I get the exclusive raid unit?
A: The exclusive raid unit can only be obtained from the Raid Shop using raid currency earned from completing raid floors.
Q: What happened to the old bundles?
A: All old bundles have been permanently removed and replaced with the new Update 0.5 bundles that offer better value and more relevant rewards.
Q: Can I transfer stats between different unit types?
A: No, Stat Transfer only works between units of the same type. You can’t transfer stats from a DPS unit to a support unit, for example.
Q: How do star ratings work on relics?
A: Star ratings are random bonuses on raid relics that provide percentage stat increases. Higher star ratings mean better stats, with 4-star relics being extremely valuable.
Community Resources & Updates
Stay connected with the Universal Tower Defense community for the latest updates, strategies, and code releases:
Official Sources:
- Official Discord: Join for real-time updates and community discussion
- Roblox Group: Follow for announcements and events
- Twitter/X: Check for emergency codes and maintenance notices
Community Resources:
- YouTube Guides: Video tutorials for raid strategies
- Reddit Community: Player discussions and strategy sharing
- Wiki Pages: Detailed unit information and evolution requirements
Internal Resources:
For more Universal Tower Defense content, check out our other guides:
Conclusion
Absolutely! Universal Tower Defense Update 0.5 “Hollowed Eclipse” is the most significant update in the game’s history, transforming it from a standard tower defense game into a deep, strategic experience with meaningful endgame content.
The raid system provides challenging content that will keep you engaged for months, while the new progression systems eliminate frustrating RNG elements that plagued the game before. The new units are powerful and exciting, and the relic overhaul adds incredible build diversity.
Whether you’re a returning player or just starting out, there’s never been a better time to dive into Universal Tower Defense. The quality-of-life improvements make the game more accessible than ever, while the endgame content provides a clear progression path for dedicated players.
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