Boss Mechanic: Hyper Armor
CriticalUnderstanding the Frostbite Dragon
The Frostbite Dragon is not a normal enemy. He has Hyper Armor which makes him nearly invincible without the proper counter.
- Effect — Reduces ALL incoming damage by 90%
- Counter — Apply "Defense Break" using Kenpachi
- Visual Cue — A cracked shield icon appears above his head
The Kill Squad
Essential Units
SSS TIER
Ace — The Burner
Main Boss DPS
While armor is broken, Ace stacks burn. With Astral trait, this burn bypasses boss defense scaling.
Trait: Astral (Mandatory)
Synergy: Kenpachi (Breaker)
SSS TIER
Kenpachi — The Breaker
Enabler
He does 0 damage himself, but he enables your Ace to deal 1000% damage. Mandatory for any Ragna run.
Role: Defense Break
Priority: MUST HAVE
Complete Tier List
Updated Jan 2026| Tier | Unit | Role | Meta Note |
|---|---|---|---|
| SSS | Ace | DOT Stacker | The Boss Killer. 100+ Burn stacks melt HP. |
| SSS | Kenpachi | Armor Breaker | Required to remove 90% Dmg Reduction. |
| SS | Spade | Air DOT | Can hit flying enemies in Waves 1-14 reliably. |
| SS | Nei (E6) | Knockback | Keeps the boss away from base while burn ticks. |
| S | Lelouch | Support | Rewinds the boss if he gets too close. |
| A | Ragna | Raw DPS | Strong for minions, weak for boss (no DOT). |
| A | Admiral | Slow | Magma pools help with crowd control. |
Three Steps to Victory
Step-by-Step1
The Setup Wave 1-14
The raid spawns flying enemies. Ragna (unit) is bad here.
- Place your kill squad at the END of the track.
- This gives you maximum time to stack burns during boss walk.
- Use Spade or Ace for early wave clears.
2
The Break Boss Entry
The Dragon spawns with a shield.
- Wait for him to enter Kenpachi's range.
- Verify the "Broken Shield" icon appears.
- If not, use Lelouch to rewind him back into range.
3
The Burn Loop
Once armor is broken, Ace starts stacking.
- Look for RED damage numbers.
- Use Nei (E6) to knock him back continuously.
- Do not let him reach the base until burn stacks > 50.
Frequently Asked Questions
What if I don't have Kenpachi?
You cannot kill the boss efficiently. Ask a friend to bring him, or buy him
from the market. He is mandatory.
Does 2 Ace units stack burn faster?
Yes. Placing multiple Ace units will reach the stack cap faster, but the cap
itself is determined by Trait/Relic.