Quick Answer
Use the shrines guide for general shrine prep, the Memory tier list to confirm Proto Killer Memory value, and this page when the specific question is how to clear Proto Killer Shrine efficiently.
Proto Killer Shrine at a Glance
Content type
High-difficulty shrine quest
Boss family
Machine family
Super weakness
Lightning
Key mechanic
Rotating stage lasers + stone doll defense buff + paralysis jellyfish
Build fit
Yellow Memory slots, wind physical support, lightning/wind weapon plans
Always confirm
Live stage screen, reward screen, team safety, and challenge timer
Unlock and Access
Shrines unlock at Adventure Rank 10. Proto Killer Shrine becomes available after clearing Story Chapter 4, Stage 10. Each entry consumes 1 Shrine Key, and free keys cap at 10, so spend them on real targets rather than letting them sit at max.
Build your main, sub, and party setup around the weakness table and challenge conditions. Bring a Martial Artist for the mission condition, and prioritize lightning weapons for maximum damage output.
Boss Profile
Proto Killer is a Machine family boss with clear elemental weaknesses and resistances. Build your team around the super weakness first, then cover the secondary weakness if lightning options are limited.
| Element | Multiplier |
|---|---|
| Lightning | Super weakness |
| Wind | Weakness |
| Ice | Resist |
| Earth | Neutral (1.0x) |
No confirmed priority damage role for fire, light, or dark. Prioritize lightning and wind weapons.
Challenge Conditions
Meet the three mission conditions for mission rewards. Check the live reward screen in your client for Memory acquisition and exact drop details.
| Condition | What to do |
|---|---|
| Martial Artist in party | Have a Martial Artist-class character in your party setup |
| Clear within 3:00 | Defeat the boss before the 3-minute timer expires |
| No deaths | Keep your character alive through the full clear |
Recommended Weapons and Armor
Weapons
| Weapon | Element | Why it fits |
|---|---|---|
| Roto Sword | Lightning | Top pick; super weakness, strong special attack output |
| Crystal Claw | Lightning | Strong lightning option with good attack speed |
| Metal Slime Sword | Utility | Attack speed boost helps meet the 3-minute timer |
| Metal Wing | Utility | High mob handling for clearing adds efficiently |
Armor
| Armor series | Key effect | When to use |
|---|---|---|
| Roto series | Lightning power UP + dragon resistance | Strong match when running Roto Sword |
| Holy Domain series | Lightning power UP | Strong alternative for lightning builds |
| Metal Slime series | Physical power UP + all resist | When you want extra bulk against lasers and adds |
Adventure Skills
Spread attack and continuous attack (basic attack strengthening skills) are the core recommendations. They improve your auto-attack output and help you stay efficient inside the tight timer. Sword and ball axes with consecutive attack are the stronger Proto Killer-specific directions.
Strategy Points
1. Lightning Weapons First
Lightning is Proto Killer’s super weakness. Prioritize lightning weapons for the boss. If you lack lightning options, Hayabusa Sword and Wind Boomerang cover the wind weakness. Ice is resisted, and earth is neutral.
2. Watch the Rotating Lasers
The arena has rotating stage lasers that sweep the arena. Watch the rotation direction and move into the safe gaps between beams. Face-tanking the damage is not sustainable. Ranged or safer-position options like Wind Boomerang, or lightning burst from Crystal Claw’s special, can help you keep attacking while avoiding the beams.
3. Clear Stone Dolls Quickly
Stone dolls appear during the fight and cast defense buffs on the boss. Kill them immediately to prevent the boss from becoming harder to damage. Wide-range attacks or Metal Wing help clear them without losing focus on the boss.
4. Paralysis Jellyfish
Paralysis jellyfish spawn as adds and can lock your movement. Prioritize killing them or staying out of their range. If you get paralyzed, you are vulnerable to the next laser sweep.
5. Final Phase Charge Attack
In the final phase, the boss charges a powerful attack. When the on-screen prompt appears, use consecutive attacks to stun the boss and interrupt the charge. This is the correct answer; if you miss the stun window, prepare healing and defensive skills to survive the burst.
6. Clear Mobs Efficiently
Mobs spawn alongside the boss. Use wide-range attacks or Metal Wing to handle adds without losing time. Single-target focus slows the clear and increases the risk of failing the 3-minute condition.
7. Use the General Shrine Retry Trick
If the boss fight goes badly, you can retry from before the boss by suspending the app (killing the task). This is a general shrine practice that works across shrine quests, not something unique to Proto Killer. It lets you reattempt the boss without restarting the entire shrine. Use it to practice laser dodging and timer management.
8. Red Gate Bonus Memory
A red travel gate may rarely appear during the shrine. Entering it stops the timer and lets you fight an inner boss for an extra Memory drop. You cannot reroll for it; treat it as a bonus, not a farm target.
Proto Killer Memory
Proto Killer Memory is a yellow Memory obtained as a clear reward from Proto Killer Shrine. It belongs to the machine family and is rated SS tier for wind physical builds.
| Property | Value |
|---|---|
| Color | Yellow |
| Family | Machine |
| Starting skill | Wind ball skill |
| Main effect | Wind physical damage +10% |
| Acquisition | Proto Killer Shrine clear reward |
The Memory has strong physical-leaning stats, making it useful even before your final build is perfect. Check the Memory tier list to confirm how it ranks against other yellow options before committing heavy farm time.
Retry Tips
The shrine boss can be retried using the app-suspend method:
- Enter the boss fight and assess the opening.
- If positioning or damage is poor, force-close the app before the clear registers.
- Reopen the game; you will resume from before the boss.
This is useful for practicing laser dodging and testing whether your current build can meet the 3-minute timer without spending a full run each attempt.
Related Reads
| Page | Use it for |
|---|---|
| Proto Killer Memory | Confirming yellow slot fit, wind physical value, and wind ball skill synergy |
| Memory Tier List | Comparing Proto Killer Memory against other yellow options |
| Shrines Guide | General shrine prep, build habits, and live reward-screen checks |
| Roto Sword | Weapon data and lightning build synergy |
| Crystal Claw | Lightning weapon alternative with attack speed |
FAQ
Should I attempt Proto Killer Shrine early?
Only when your build can clear safely and you have lightning or wind weapons ready. If your shrine basics or weapon plan are still unfinished, handle stable farming first and return later.
Is Proto Killer Memory the reason to clear this shrine?
It can be, but only when your build can use a yellow Memory with wind physical damage and wind ball skill synergy. It is especially strong for wind physical builds and early accounts that need sturdy physical stats. If the slot or effect does not help your current carry, treat the Memory as a long-term goal rather than an immediate farm target.
What if I do not have a lightning weapon?
If you have no lightning weapon, wind weapons are the best alternative. Ice is resisted, and earth is neutral. There is no confirmed advantage for fire, light, or dark.
How do I beat the 3-minute timer?
Use lightning weapons for maximum damage, equip Metal Slime Sword for attack speed, bring spread or continuous attack adventure skills, and clear stone dolls immediately so the boss does not gain defense buffs. Practice the retry trick to refine your opening without wasting full runs.
How do I dodge the rotating lasers?
Watch the rotation direction and move into the gaps between beams. Do not try to face-tank the damage. Ranged lightning options let you attack from safer positions while still exploiting the lightning weakness.