Why Relics Matter in Universal Tower Defense Z
Are you struggling to push through the hardest stages in Universal Tower Defense Z? The 4.0 update introduced the Hero Relic Set, a game-changer for debuff-based teams. This Universal Tower Defense Z relic guide will walk you through everything you need to know—from farming strategies to equipping the right pieces. Understanding relics is the key to unlocking massive damage boosts and turning your support units into powerhouses.
The relic system can be confusing at first. Drop rates, extraction mechanics, and set bonuses all need to be learned. But once you master them, your team’s potential skyrockets. Keep reading to become an expert in the Universal Tower Defense Z relic guide.
What Are Relics in Universal Tower Defense Z?
Relics are special equipment pieces that you equip on units to boost their stats and grant unique set bonuses. In Universal Tower Defense Z, relics come in three types:
| Type | Role |
|---|---|
| Top | Focused on offensive stats like damage, crit damage, and DoT damage |
| Bottom | Provides range, cooldown reduction, damage, or crit rate |
| Accessory | Grants unique effects and elemental damage boosts |
Based on community experience from tower defense games, relics also have different rarities that affect how many substats and levels they can reach. While Universal Tower Defense Z hasn’t officially confirmed all rarities, player reports suggest a system very similar to the one found in the wider series:
| Rarity | Max Substats | Max Level |
|---|---|---|
| Rare | 1 | 6 |
| Epic | 3 | 9 |
| Legendary | 4 | 12 |
| Mythic | 5 | 15 |
| Raid | 5 (with stars) | 15 |
For a detailed look at all known relic sets in the franchise, check out the Universal Tower Defense X Relics Wiki (note: that wiki is for a related game, but the mechanics are very similar).
How to Get the Hero Relic Set: Extraction Mode Guide
The Hero Relic Set was added in update 4.0 and is only obtainable through the Extraction game mode. More specifically, you need to play the Crime Fighting Extraction stage. This stage is noticeably harder than regular missions. A solo run can take anywhere from 25 to 35 minutes depending on your team composition and luck.
World Events: Your Ticket to Hero Pieces
During an extraction run, special world events will randomly appear on the map. When you see one, walk up to it and check its details. Not every world event drops Hero relic pieces—only some will list the Hero Set as a possible reward.
If the event does include Hero relics, the drop chances are:
| Piece | Drop Chance |
|---|---|
| Accessory | 30% |
| Top | 50% |
| Bottom | 50% |
Because multiple world events can spawn in a single run, you don’t have to get all three pieces from one event. You can collect them gradually over several events.
Extraction Mechanics – Don’t Lose Your Loot
This is the most important part: you only keep the relics if you successfully extract. When the game shows an extraction notification, you can leave the stage and receive all prizes collected so far. There can be multiple extraction opportunities during one run, with the final extraction marking the end of the mission. If you fail to reach the extraction point in time, the entire run fails and you lose everything you picked up.
So always prioritize the extraction objective, especially when you already have valuable relic pieces.
Hero Relic Set Stats and Bonuses
The Hero Relic Set is specifically designed to empower units that apply debuffs. Here’s the full breakdown:
Piece Bonuses
| Piece | Effect |
|---|---|
| Accessory | +12% bonus damage for 10 seconds after applying a debuff; increases debuff duration by 10 seconds |
| Top + Bottom (2-piece) | +40% damage dealt after applying a debuff |
| Full Set (3-piece) | +25% damage, +15% elemental damage, +5% critical chance, –5% SBA (attack cooldown) |
These numbers make the Hero Set one of the strongest choices for any unit that consistently lands debuffs. The accessory alone significantly extends how long enemies stay weakened while boosting your damage.
How the Bonuses Stack
- The 2-piece bonus (Top + Bottom) activates when the unit applies any debuff and lasts for 10 seconds. It does not stack with itself, but it can be refreshed.
- The accessory effect (12% bonus + 10s debuff extension) is separate from the 2-piece bonus.
- The full set bonus is passive and always active, granting raw stats.
Best Units for the Hero Relic Set
The hero set shines on units that can regularly apply debuffs. Here are the categories that benefit most:
- Support units – Many supports already specialize in slowing, stunning, or weakening enemies. The accessory’s debuff extension keeps those effects active longer.
- DPS units with debuff abilities – Attackers that inflict burn, poison, or armor break can proc the 2-piece damage boost very frequently.
- Tag synergy – If a unit has a tag that further boosts debuff effects (e.g., “Hollow” or “Reaper”), the Hero Set can become even more powerful. (Player reports indicate some units in Universal Tower Defense Z benefit from such tags.)
Example Build
Use the Hero Set on a unit like Shadow Reaper or Bio-Android (if available in your roster). Equip the Top + Bottom for the constant damage proc, and the Accessory for the debuff duration. Pair with other gear that increases attack speed so you can apply debuffs faster.
Farming Tips for Extraction Mode
To make your farming runs efficient, keep these tips in mind:
| Tip | Explanation |
|---|---|
| Always check world events | Don’t ignore them—walk over and verify the rewards. Only invest time in events that offer Hero relics. |
| Team composition | Bring a balanced team: strong early wave clear, a dedicated debuffer, and a reliable unit for the extraction boss. |
| Extraction priority | If you already have a Hero piece, stay close to the extraction zone and don’t take unnecessary risks. |
| Solo vs. co-op | Solo runs take 25-35 minutes but give you full control. Co-op can be faster but you compete for event drops. |
| Prepare for multiple extractions | The mode offers more than one extraction point. Use the first ones to bank any Hero pieces you collect, even if you plan to continue for more. |
| Don’t forget to leave | After you get the pieces you need, extract immediately. There’s no benefit to staying longer once you have your rewards. |
What If You Fail the Extraction?
Community reports confirm that failing to extract results in losing all relic items obtained during that run. This is especially painful if you’ve collected one or two Hero pieces. Always prioritize finishing the extraction over farming a few more kills.
Frequently Asked Questions about Universal Tower Defense Z Relics
Q: Can I get the Hero Relic Set from other stages or modes?
A: Currently, the Hero Relic Set is exclusive to the Crime Fighting Extraction stage. No other mode or world event offers these pieces.
Q: What does SBA reduce mean?
A: SBA stands for “Seconds Between Attacks.” A reduction in SBA means the unit attacks faster. The full Hero Set lowers SBA by 5%.
Q: Is the Hero Set better than other relic sets in Universal Tower Defense Z?
A: It depends on your unit. For debuff-focused units, the Hero Set outperforms most alternatives. But for pure DPS or crit-based builds, other sets like Sun God or Rebellious Shinobi might be better. Check the full relic list for the series to compare.
Q: Can I farm the Hero Set on easy difficulty?
A: No, the Crime Fighting Extraction stage is fixed at a hard difficulty. You need a strong team to survive and reach extraction.
Q: Do world events always appear?
A: World events spawn randomly during extraction runs. There is no guaranteed spawn, so you may need multiple runs to see events that offer Hero relics.
Q: How many times can I extract in one run?
A: The mode provides multiple extraction opportunities, with the final extraction at the very end. You can leave at any extraction point, but if you miss the final extraction, you lose everything.
Now that you have the full Universal Tower Defense Z relic guide, it’s time to jump into the extraction mode and start farming. Focus on building a debuff-heavy team, check every world event, and always make it to that extraction zone. With a little patience, you’ll have the Hero Set equipped and your units dealing massive extra damage in no time.