Rapidly Boosting Your Strength in Last Z: Survival Shooter

To effectively increase your battle power in Last Z, focus on resolving your current progression blockers rather than simply inflating your Combat Power (CP) score. Prioritize investments based on the five critical areas outlined below. Ignoring any can hinder overall development and combat readiness.

The Core Pillars of Combat Power

Your total Combat Power (CP) is derived from five fundamental categories:

• Structure Power: Derived from your base buildings, including your Headquarters and Laboratory.
• Tech Power: Represents the completion of various research projects.
• Troop Power: Reflects the size and tier of your army.
• Hero Power: Encompasses hero levels, star ranks, skill development, and equipment.
• Modified Vehicle Power: Comes from your vehicle's level, modifications, and installed components.

The most efficient way to gain strength is by addressing the component that is currently limiting your progress.

If this is blocked...	Prioritize this next
New buildings, troop tiers, or research are locked	Headquarters and Laboratory
You have resources but weak combat statistics	Hero Training to Cockpit, Military Strategies, Peace Shield
Training queues are idle or troop tier is low	Troop training and Elite Troops research
You lose fights despite good CP	Main 5 heroes, high-tier gear, and combat skills
Vehicle components remain unavailable	Vehicle level 100 path

For example, having 48 million army power with only 10.3 million structure power demonstrates an imbalance. A balanced approach across all power types is crucial.

Accelerating Structure Power Gains

Always begin with your Headquarters (HQ) and Laboratory, as these two buildings are foundational to all other advancements. If either lags, new research, troop tiers, and event scoring opportunities will be severely impacted.

Headquarters — The Nerve Center

Upgrading your HQ is paramount, as it unlocks:

• Access to new building types
• Higher tier troop capabilities
• Advanced research options
• Significant CP increases

Rule: Upgrade your HQ as quickly as possible. Immediately thereafter, begin the required Laboratory upgrade.

Laboratory — The Essential Requirement

Crucial: You cannot advance your HQ without first upgrading your Laboratory to the same level. This is a mandatory prerequisite at every stage.

• Upon reaching HQ level 23, immediately start Lab level 23.
• Do not expend speed-ups on Lab upgrades if you lack the resources for the subsequent HQ upgrade.
• The second Laboratory (a purchasable item) should not be a primary upgrade focus.

Other Headquarters Prerequisites

Each HQ level typically demands a second specific building be upgraded alongside the Laboratory. This can be one of the three troop camps (Assaulter, Shooter, Rider) or specialized structures like the Alliance Center or Event Formation.

• For instance, HQ 24 requires Assaulter Camp 23, and HQ 25 needs Shooter Camp 24.
• Tip: Consult seasoned players about future level requirements to prepare in advance.

Resource Buildings — A Word of Caution

Important Warning: Avoid upgrading resource production buildings beyond level 20!

• Beyond this point, their output (~800 resources/hour) provides only 1.3-1.5 million resources weekly.
• The cost to upgrade them can exceed 16 million resources.
• The return on investment (ROI) can take over four months to recoup the initial cost, making it inefficient for CP gain. Focus resources elsewhere.

Synchronizing Building Upgrades with Events

Always align your building projects with active in-game events:

• Shelter Upgrade event: Grants points for building progress and speed-up usage.
• Full Preparedness event: Provides additional rewards during specific times (08:00 and 20:00 Apocalypse Time).

Avoid randomly completing construction; save it for designated building event days.

Optimizing Research Power

Research decisions should prioritize actual combat or event value. While Alliance Recognition checkpoints boost weekly rewards, evaluate them against core combat research like Hero Training, Military Strategies, and Peace Shield.

Research Priority Sequence

1. New Home research: Inexpensive, offering 10% construction and 10% research speed. This is a single, non-branching path and should be completed first.
2. Shelter Building research: Provides further statistics and accelerates both research and construction.
3. Elite Troops research: Uniquely, this doesn't consume research badges. Complete this before engaging with badge-intensive research.
4. Alliance Recognition checkpoints: Develop these to enhance event rewards, but always compare the cost of the next checkpoint against the benefits of investing in combat-focused research branches.

Alliance Recognition — Valuable, but Not Always First

While Alliance Recognition is vital for increasing event rewards, it shouldn't overshadow combat development. Its value depends on your account's current need for core combat strength.

Benefits:

• Doubled rewards: All daily chest rewards are duplicated.
• Unlocks chests 4-9: Grants access to all Alliance Duel rewards.
• Event King research: Boosts points earned by +200%.
• Event Expert research: Adds an extra +100% points.
• Total: A potential 300% increase in event points when fully maximized.

Before progressing further, assess whether the next checkpoint yields more value than essential combat research.

Fully Armed & Alliance Recognition Trees

These research trees are specifically designed for the Alliance Duel event and typically become available later in the game. Do not neglect combat research in favor of these if your core combat capabilities are lacking.

If crucial branches like Hero Training to Cockpit, Military Strategies, or Peace Shield are incomplete, prioritize them over deeper Alliance Recognition investments. Once that foundation is solid, plan further research strategically.

Maximizing Troop Power

Troop power is built on two consistent habits: ensuring training queues are always active and continuously unlocking higher troop tiers. Infrequent speed-up bursts are less effective than persistent training.

Continuous Training

Simple Rule: More troops equal more power. Maintain non-stop troop production.

• Keep training queues active 24/7.
• Reserve training speed-ups for specific event days, such as Alliance Duel Training day (Friday).
• Strive to acquire T10 troops, which requires your Laboratory to reach level 30.

Military Center

Upgrade your Military Center to expand your unit training capacity.

• Higher levels permit training a greater number of troops concurrently.
• For instance, Level 23 allows 13,300 units, while Level 24 allows 14,300.
• Priority: Focus on achieving T10 troops before significantly over-investing in the Military Center.

Training Speed Enhancements

Multiple factors can boost your troop training speed:

• Research: Assembly Tech and Assault Training Speed can add +10%.
• Refugees: Specific refugees, such as Assaulter camp refugees, provide training speed bonuses.
• Heroes: Some Season 1 heroes offer troop-specific training buffs.
• Blue Heroes: Certain support heroes provide global training benefits.

Elevating Hero Power

Hero power resources can be easily misspent. Direct investments first into your main five heroes: their levels, star ranks, skill books, orange quality gear, and combat-focused skills.

Sources of Hero Power

• Level: Increased using experience items.
• Star Rank: Advanced using hero fragments.
• Skill Levels: Improved using skill books.
• Equipment: Upgraded with power cores and alloys.

Focus on Your Main Five Heroes

Concentrate all resources on the heroes in your primary formation. Avoid distributing resources too thinly across many characters.

Skill Priority: Not every skill needs to be maximized!

• S+ Tier Heroes (e.g., Yu Chan, Licia, Selena): Maximize all skills for these core combat heroes.
• Sophia (A Tier): Do not max her 3rd skill, which is solely for construction, unless your focus is entirely on building.
• Katrina (B+ Tier): Primarily valuable for her global passive abilities, not typically a priority Damage Per Second (DPS) hero.
• Blue Heroes: Only upgrade for their global passive bonuses (e.g., gathering speed, training speed).

Equipment Strategy

Exclusively focus on orange quality equipment.

• You will acquire over 20 pieces of orange equipment through various game activities.
• Purple and blue gear can be used later to upgrade orange equipment.
• Maintain similar equipment levels across all your main heroes to prevent resource conflicts.
• Save power cores, as they are crucial for equipment promotion.

Sources for Orange Equipment:

• Merit Shop: One piece of orange equipment available weekly.
• Arena Shop: Offers orange equipment choice boxes.
• Exploration: Higher stages provide orange equipment rewards.

Blue & Purple Heroes

Only upgrade these heroes on Thursday, which is Hero Initiative day in Alliance Duel.

• Blue heroes offer beneficial buffs like gathering and trading speed.
• Prioritize upgrading their star ranks before their skills, as star gates unlock higher skill levels.
• Remember, blue heroes are support units and cannot participate in combat formations.

Enhancing Modified Vehicle Power

Vehicle power delivers a significant boost once components become available. The crucial milestone is reaching vehicle level 100; before that, maintain steady progress without diverting resources from your HQ, research, troops, or main heroes.

Vehicle Level 100 — The Critical Goal

Aim to get your vehicle to level 100 to unlock powerful components.

• Components provide substantial statistical boosts.
• Level 7 components are achievable without significant spending.

Component Stat Scaling Example:

• Level 12: 114% troop defense in siege
• Level 13: 140% troop defense in siege
• Level 14: 166% troop defense in siege
• Level 15: 200% troop defense in siege

Modifications (Golden Wrenches)

Utilize golden wrenches to enhance your vehicle's stats. These are frequently obtainable from Gacha Go events.

• Troop damage resistance
• All hero defense
• Infield troop defense (critical for tank engagements)
• Troop HP
• All hero attack

Expert Modifier Caution

Do not upgrade to Expert Modifier prematurely! A future feature will allow 100 modification attempts in 30 minutes, granting double experience. This requires 160,000 modification blueprints. Save your blueprints for this opportune moment.

Indirect Power Enhancement Methods

Resource Management

• Constant Gathering: World map gathering is far more efficient than in-base production, especially with multiple marches and gathering bonuses.
• Radar Tasks: Yields versatile fragments, alloys, and power cores.
• Alliance Duel Gathering: Earn points simply by gathering during this event.

Refugees

Refugees offer boosts across various aspects of your base:

• Book Store Refugees: Increase research speed (+8-25%).
• Construction Refugees: Improve building speed.
• Assaulter Camp Refugees: Crucial for long-term training speed.
• Military Center Refugees: Enhance unit capacity.

Continuously recruit and upgrade refugee stars!

Exploration

Higher exploration stages provide superior rewards:

• Orange equipment choice boxes
• Power cores (at higher levels)
• Purple equipment boxes
• Hero experience
• Resources

Arena Participation

Participate daily regardless of your current rank.

• Peak Arena: For heroes in the top 400 power (offers better rewards).
• Silver Arena: For those below the top 400.

Arena Shop: Prioritize buying orange equipment choice boxes and power cores. If you have surplus medals, versatile orange fragments are a good choice.

VIP Levels

Goal: Aim for a minimum of VIP 10.

• VIP 8: Daily purple hero fragments, purple skill books.
• VIP 9: +5% march speed, +10% fuel restoration.
• VIP 10: Daily versatile orange fragment, power cores, orange skill book.
• VIP 12: Troop capacity, attack/defense bonuses.
• VIP 14+: Generally not feasible for players with limited spending.

Strong Alliance Benefits

Being part of an active alliance provides numerous advantages:

• Boomer Rewards: Speed-ups, healing speed-ups, training speed-ups, resources.
• Pack Purchase Rewards: When alliance members buy packs, everyone receives rewards.
• Alliance Research: Higher research levels grant better buffs for all members.
• City Captures: Yield over 1,500 diamonds per city capture.
• Alliance Duel Rewards: Six versatile fragments and 1,500 badges for weekly victory.
• Alliance Teleports: Easily accessible from active alliances.

Shops — What to Purchase

Regular Shop:

• Buy: 8-hour speed-ups, 3-hour speed-ups, badges, golden wrenches, fuel.
• Skip: The 'Items' section.

Merit Shop:

• Buy: Orange equipment (weekly), power cores (after all five main heroes have orange equipment).

Glory Shop:

• Buy: Versatile orange fragment, honor chest, versatile exclusive equipment fragment, golden wrench chest, level 3 random component chest.
• If you have over 100,000 Glory Badges: Consider speed-ups or resources.

VIP Shop:

• Golden wrenches
• Fuel (at a discounted rate)
• Medals (always purchase)
• Speed-ups
• Skip: Orange skill books.

Lucky Discount Shop:

• Participate for substantial amounts of speed-ups, resources, event badges, and fuel.

Events to Prioritize

Daily/Weekly Events

• Full Preparedness: Complete all 18 daily chests for component boxes and versatile fragments.
• Alliance Duel: The most crucial event for badges and resources.
• Hero Battlefield: Offers chapter power, session rules, and Glory Badges.
• Daily Tasks: Provides one versatile hero fragment daily, plus new flower features.

Rotating Events

• Zombie Siege: Source of golden wrenches (13 at 2 million points) and modification blueprints.
• Tyrant: Provides resources and approximately 500 power cores per week for free.
• Furylord: Yields refugee tickets and diamonds.
• Survival Saga: Grants experience and versatile hero fragments.
• Mines Melee: Offers daily gems.
• Danger Lurks: Source of versatile orange fragments and badges.

Quick Tips

• Always upgrade your Headquarters and Laboratory concurrently.
• Avoid wasting speed-ups if you lack resources for the next Laboratory level.
• Limit resource building upgrades to level 20 at most due to poor ROI.
• Prioritize core combat research branches before focusing on Alliance Recognition checkpoints, especially if combat stats are low.
• Maintain continuous troop training, keeping queues active 24/7.
• Concentrate resources on your main five heroes exclusively.
• Equip heroes with orange quality gear only, consuming lower-tier equipment later.
• Push your vehicle to level 100 to unlock components.
• Align building and research with the Full Preparedness event, especially at 08:00 and 20:00 Apocalypse Time.
• Never overlook daily Arena rewards, alliance shop offerings, VIP gifts, and event participation.
• Being in a strong, active alliance is crucial for boomer rewards, pack bonuses, and city capture diamonds.