Last War: Survival Complete Scarlett Build Guide | Skills, Gear, Team Setup
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Last War: Survival Complete Scarlett Build Guide | Skills, Gear, Team Setup

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Nicole
2026/07/09

Scarlett is not a filler tank. She is not a hero you bench the moment you unlock someone else. If you are still treating her as a temporary placeholder, you are leaving survivability on the table—for both your front line and your main damage dealer. This guide walks through exactly how Scarlett works, where to place her, which skills to upgrade first, and why her Season 3 UR promotion makes her a long-term asset worth collecting now.

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Scarlett Overview

Scarlett is a Tank-class hero with a Support role, currently available at SSR rarity. She excels as a front-line defender during the early and mid-game phases, and she gains significant long-term value because she can be promoted to UR in Season 3.

Her core identity is protective utility—she does not just absorb damage for herself; she actively reduces incoming damage and boosts defense for a chosen teammate. This makes her unique among early-game tanks, as most other front-liners only buff themselves.

scarlett

Class: Tank | Role: Utility Support  | Rarity: SSR (upgradeable to UR)

Best Used: Early–mid game as a primary or secondary front-liner; remains viable later after UR promotion

 

Scarlett Skill Breakdown

Scarlett has three skills, and each serves a distinct purpose in keeping your team alive.

Auto Attack – Flame Burst

Her basic attack deals fire-based damage from the front row. This is her least impactful skill—it provides damage, but Scarlett is not built to be a primary damage dealer. Upgrade this only after her other skills are maxed.

Tactics Skill – Bastion Guard

When Scarlett uses her tactic ability, she reduces damage taken by herself and one adjacent unit. The reduction lasts for the full duration of the skill, and the cooldown is short enough that the effect is essentially permanent once she casts it at the start of combat.

Key mechanic: The “adjacent unit” is the hero positioned directly behind Scarlett in the back row. This means you can choose exactly which teammate benefits from the damage reduction by placing them in that specific slot.

The value here is that your primary damage dealer—typically your strongest back-row carry—receives the same damage reduction as Scarlett herself, significantly improving that hero’s survival against enemy burst damage.

Passive Skill – T05 Armor

Scarlett’s passive permanently increases her own defense. Additionally, it also boosts the defense of one adjacent unit—again, the hero directly behind her.

This means the same teammate who gets damage reduction from her tactics skill also gains a significant defense boost from her passive. The two effects stack, making your back-row carry far more durable than they would be with any other front-line tank.

The combined protection package:

  • Damage reduction applied to Scarlett and the hero behind her
  • Defense boost applied to Scarlett and the hero behind her

Because both effects target the same adjacent unit, you can create a “protected carry” strategy: put your strongest damage dealer behind Scarlett, and that hero will survive much longer in every fight.

 

Skill Upgrade Priority

Not all skills are equal. Focus your skill medals in this order:

Priority

Skill

Reason

1

Tactics Skill (Damage Reduction)

The reduction applies to both Scarlett and your carry—best return on investment

2

Passive (Defense Boost)

Permanent defense increase for Scarlett and the same carry

3

Auto Attack

Lowest impact; only upgrade after the other two are maxed

The tactics skill should be your top priority because its protection scales directly with your carry’s survivability. The passive is second because it adds an extra layer of defense without requiring any activation. Auto attack is last—Scarlett is not there to deal damage.

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Best Gear Setup

As a front-row tank, Scarlett needs survivability stats over offensive ones.

Gear type priority:

1. Armor – Primary defensive stat; upgrade this first

2. Radar – Secondary defensive stat for additional survivability

3. Cannon / Chip – Offensive stats; low priority

Enhancement goal: Aim for orange (legendary) gear on all slots. Focus on getting your Armor and Radar to level 20 before investing heavily in offensive pieces.

Scarlett’s passive already gives her a strong defense boost, so gear should complement that by stacking even more durability. Do not waste resources on attack gear for her—she is not a damage dealer.

 

Team Compositions

Early Tank Squad

Front Row

scarlett

Scarlett

 

Murphy

Murphy

Back Row

Kimberly

Kimberly

Stetmann

Stetmann

Marshall

Marshall

Use Scarlett as a front-liner alongside Murphy. Place your primary damage dealer directly behind Scarlett to maximize the damage reduction and defense boost from her skills. Murphy handles the primary tanking role while Scarlett provides team protection.

Season 3+ Tank Squad

Front Row

scarlett

Scarlett (UR)

 

Murphy

Murphy

Back Row

Kimberly

Kimberly

Mason

Mason

Marshall

Marshall

After her UR promotion in Season 3, Scarlett becomes a legitimate front-line choice alongside Murphy. The promotion significantly boosts her stats, making her more durable and effective in extended fights.

 

Scarlett UR Promotion – What You Need to Know

Scarlett‘s UR promotion is tied directly to Season 3 mechanics. Here is exactly how the process works.

First, the promotion event does not start immediately when Season 3 begins. It becomes available on day 15 of Season 3. You cannot promote her before that date.

To actually promote Scarlett, you need a specific UR token badge. This badge is not given to you automatically. You earn it by upgrading your Curse Research Lab to level 30. Once your Curse Research Lab reaches level 30, go to the Season 3 icon, click on “Goals,” and you will find the UR badge as a reward for hitting that building level.

Scarlett UR Promotion

Important star reset mechanic: When you promote Scarlett to UR, her stars reset to 3 stars—just like other UR promotions in the game. You will need to collect additional SSR shards to bring her back up to 5 stars. Plan your shard economy accordingly if you intend to use her in your main squad right after promotion.

Scarlett UR Promotion

Additionally, after promotion, Scarlett receives a Season 3 boost, giving her extra power during that season's content.

Because the promotion requires a level 30 Curse Research Lab, plan your building upgrades ahead of time if you want to promote her immediately when the event starts on day 15.

 

Common Mistakes to Avoid

  • Placing Scarlett in the back row
    She is a tank. Her skills are designed for the front line. Putting her in the back wastes her defensive stats and leaves your actual front row unprotected.
  • Not putting your main damage dealer behind her
    The adjacent-unit buffs are the entire reason Scarlett is valuable. If you place someone else (like a support or a secondary tank) behind her, you lose the protection on your carry.
  • Over-investing in her offensive gear or auto attack
    Scarlett does not scale with attack. Prioritize armor and radar. Spending resources on her cannon or chip is inefficient.
  • Ignoring shard collection because “she is just temporary”
    Even if you bench her early, her UR promotion makes her relevant again. Skipping shards now means you will have to farm them later when they are harder to get.

 

Final Thoughts

Scarlett offers something that most tanks do not: direct, controllable protection for your most important damage dealer. The positioning trick is simple, but it completely changes how your back-row carry performs in extended fights. Whether you are pushing PvE content or holding your own in PvP, keeping Kimberly (or your main DPS) alive for an extra few seconds often decides the outcome.

Next step: Open your hero roster right now. Check how many Scarlett shards you have. If you have been ignoring her, start grabbing them from shops and events—they are free progress toward a UR promotion that will pay off in Season 3. And if you need a resource boost to accelerate your gear or shard farming, LDShop has competitive offers to help you stay ahead.

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Nicole

Nicole Experienced Game Editor

Hi, I’m Nicole, a game content writer and editor who focuses on breaking down complex game systems into clear, practical guides that players can actually use. I spend most of my time exploring how progression mechanics work in modern RPGs and live-service games—especially systems involving character building, resource loops, and upgrade structures like console setups, module systems, and gacha-style mechanics. My goal is to take all the confusing parts of a game and turn them into something simple, readable, and efficient, so you can spend less time guessing and more time progressing.