Glacieradon is a special Alliance challenge added to Zombie Invasion after Season 2 in Last War: Survival.

Unlike normal Zombie Bosses, Glacieradon is not primarily a rally boss. It is an Alliance-wide damage challenge where the Alliance must first kill enough Zombie Bosses to fill the Glacieradon progress bar, then activate the challenge and use a limited number of attacks efficiently.

Success depends on:

• Alliance coordination
• Correct timing
• Strong individual marches
• Efficient use of the limited attacks
• Understanding critical hits and attack rewards
• Collecting Glacieradon Treasure
• Making sure the challenge is started before the event cutoff

Important: This guide covers the Zombie Invasion → Glacieradon Alliance challenge. It should not be confused with the separate Season 2 Nuclear Furnace Glacieradon mechanic, where Glacieradons move across the warzone and attack cities.

What Is Glacieradon?

Glacieradon is a powerful Alliance boss that becomes available once your Alliance has progressed far enough through the Zombie Invasion event.

The Alliance must first defeat Zombie Bosses to earn Glacieradon Points.

Once enough points are collected:

• The Alliance Glacieradon challenge becomes available.
• The Alliance Leader or an eligible R4 officer can start it.
• The challenge appears on the World Map.
• The Alliance has a limited time to defeat Glacieradon.

Each Alliance can start the Glacieradon challenge once per Zombie Invasion event.

Glacieradon Unlock Progress

Glacieradon is not immediately available when Zombie Invasion begins.

The Alliance first needs to kill Zombie Bosses.

The basic progression is:

Invading Zombies
       ↓
Zombie Bosses
       ↓
Glacieradon Points
       ↓
Progress Bar Filled
       ↓
R4 / R5 Starts Glacieradon
       ↓
Alliance Attacks Glacieradon
       ↓
Defeat Glacieradon
       ↓
Treasure + Mail Rewards

This creates two connected objectives:

1. Farm Zombie Bosses to unlock Glacieradon.
2. Organize the Alliance to defeat Glacieradon efficiently.

How Glacieradon Is Activated

Once enough Glacieradon Points have been collected, the Alliance Leader or an eligible R4 officer can manually start the Glacieradon challenge.

When it is started:

• An Alliance notification appears.
• Glacieradon becomes visible in the event's Alliance Finding section.
• Glacieradon can be located on the World Map.
• The Alliance challenge timer begins.

Only one Glacieradon challenge can be started by an Alliance during the event.

Glacieradon Challenge Timer

Once activated, Glacieradon remains available for approximately 60 minutes.

The Alliance must defeat it before the timer expires.

If Glacieradon is not defeated within the available time:

• Glacieradon leaves.
• The Alliance receives a consolation reward.
• The full victory rewards are not obtained.

Do not start Glacieradon at a time when your Alliance cannot provide enough active participation.

Event Cutoff

Glacieradon also leaves approximately 2 hours before the Zombie Invasion event ends.

After Glacieradon leaves, no new Glacieradon challenge can be started.

This creates an important planning rule:

Do not wait until the final part of the event to activate Glacieradon.

Your Alliance needs enough time for:

1. Filling the Glacieradon progress bar.
2. Organizing members.
3. Starting the challenge.
4. Using the available attacks.
5. Defeating Glacieradon.
6. Collecting Treasure.

Glacieradon Attacks

Glacieradon is attacked using individual attacks rather than relying on normal rally mechanics.

Each Commander can attack Glacieradon up to:

30 times per event.

Every successful attack:

• Deals damage to Glacieradon.
• Gives an attack reward.
• Has a chance to trigger a critical hit.

Because every Commander has a limited number of attacks, using them efficiently is important.

Critical Hits

Glacieradon attacks can trigger Critical Hits.

A Critical Hit:

• Deals multiplied damage.
• Provides a multiplied attack reward.
• Can significantly increase the value of an individual attack.

The multiplier can vary, so players should pay attention to the result shown after each attack.

This creates an important distinction:

Your goal is not only to use all attacks. You also want to maximize the value of those attacks.

The Final Blow

The Commander who lands the final blow receives a special reward multiplier.

The final attack reward is:

10× the normal attack reward.

Because of this, Alliance coordination can matter even near the end of the fight.

If Glacieradon's HP is extremely low, avoid wasting the final hit on a weak or poorly planned attack if your Alliance is intentionally trying to maximize the final-blow reward.

However, defeating Glacieradon before the timer expires remains the priority.

Glacieradon Treasure

When Glacieradon reaches 0 HP, it is defeated and Treasure appears on the World Map.

Players must collect the Treasure to receive its associated rewards.

The Treasure works similarly to other map loot that appears after important objectives are defeated.

Important restriction

A Commander who has newly joined the Alliance cannot collect Glacieradon Treasure until they have been in the Alliance for 24 hours.

Therefore:

Do not rely on newly recruited members to collect Glacieradon Treasure.

Victory Rewards

When Glacieradon is defeated within the time limit:

• Glacieradon Treasure appears.
• Alliance members receive a victory reward through mail.
• Individual attack rewards are also earned from successful attacks.
• Critical hits can increase attack rewards.
• The final blow provides the special 10× attack reward.

The event therefore has several reward layers:

Attack
   ↓
Individual Attack Reward
   ↓
Critical Hit?
   ↓
Multiplied Attack Reward
   ↓
Final Blow?
   ↓
10× Attack Reward

AND

Glacieradon Defeated
   ↓
Treasure
   ↓
Alliance Victory Mail

Failed Glacieradon

If the Alliance fails to defeat Glacieradon before the challenge ends:

• Glacieradon leaves.
• The Alliance does not receive the normal full victory result.
• A consolation reward is still provided.

The lesson is simple:

Starting Glacieradon without enough participation is usually worse than waiting for a better coordinated window.

Alliance Coordination

Glacieradon is fundamentally an Alliance coordination event.

Individual strength matters, but the Alliance's organization determines how efficiently the event is completed.

Before starting, leadership should decide:

• When Glacieradon will be activated.
• Who will participate.
• When members should attack.
• Whether the Alliance wants to coordinate the final blow.
• Who will monitor the timer.
• Who will announce the Glacieradon location.
• Who will remind members about unused attacks.

Recommended Alliance Announcement

A simple Alliance message can be:

🧊 GLACIERADON STARTING

Glacieradon will start at [TIME] server time.

Use your strongest PvE march.
You have up to 30 attacks.

Please participate as early as possible so we do not waste the 60-minute window.

⚠️ Do NOT wait until the last minute.
⚠️ Save attention for the final HP.
⚠️ Treasure requires collection after the kill.

Let's finish it together!

Who Should Attack?

Everyone who can contribute should participate.

Prioritize:

1. Strong main squads
2. Developed PvE damage teams
3. Players with strong troop tiers
4. Players with strong Hero Skills
5. Players with good Equipment
6. Players with developed Research and Drone

Glacieradon is an Alliance objective, so even players who cannot deal enormous damage can still contribute through their available attacks.

Strongest Squad or PvP Squad?

Glacieradon is a PvE damage objective.

Do not automatically copy the formation you use for PvP.

Instead, use the squad that gives you the best damage against the boss.

Your PvE setup should be evaluated based on:

• Hero composition
• Hero Skills
• Hero levels and stars
• Equipment
• Troop tier
• Troop quantity
• Research
• Drone
• Formation
• Relevant PvE bonuses

Hero Selection

Your strongest PvE Heroes should normally be used.

Prioritize:

• High-developed damage Heroes
• Strong Hero Skills
• Good synergy
• Proper Hero positioning
• Strong Equipment

A Hero that is excellent in PvP is not automatically your best PvE damage option.

Always test the actual damage result if you are unsure.

Hero Skills

Hero Skills can have a major effect on Glacieradon damage.

Before the event:

• Upgrade important combat Skills.
• Make sure the correct Skills are equipped.
• Use your strongest developed Heroes.
• Avoid sending underdeveloped Heroes simply because they have higher Power.

The goal is damage efficiency, not just displayed squad Power.

Equipment

Equipment directly affects Hero combat performance.

Before Glacieradon:

• Equip your strongest PvE damage Heroes.
• Prioritize important offensive Equipment.
• Make sure Equipment is not sitting on unused Heroes.
• Avoid entering the event with an incomplete main squad.

A properly equipped damage squad can outperform a higher-Power squad with poorly distributed Equipment.

Troops

Your troops provide the army foundation underneath your Heroes.

Use:

• Your highest practical troop tier
• Enough troops to fill the march
• The troop type that matches your Hero composition

Avoid sending a march with:

• Missing troops
• Low-tier filler troops
• Incorrect troop type
• Underdeveloped Heroes

Troop Type

Last War uses three primary troop types:

• Tank
• Aircraft
• Missile

For Glacieradon, the main priority is generally using the troop type that matches your developed Hero squad.

Do not change your entire account strategy simply because of the normal PvP counter triangle.

Glacieradon is a PvE target, so your strongest developed PvE squad is usually more important than trying to apply a PvP counter matchup.

Formation

Formation determines which Heroes are exposed to damage and how the squad functions.

For Glacieradon:

• Use your tested PvE formation.
• Protect important damage Heroes.
• Keep the strongest frontline Heroes where they belong.
• Do not blindly copy a PvP formation.

The best formation depends on your Hero lineup and current development.

Drone

Your Drone provides additional combat bonuses that can increase overall squad performance.

Before Glacieradon:

• Use your strongest Drone setup.
• Make sure relevant Drone upgrades are developed.
• Check that your combat bonuses are active.
• Combine Drone progression with Hero and Equipment development.

A stronger Drone improves the value of an already strong squad.

Research

Research provides permanent combat improvements.

Important systems include:

• Troop Attack
• Troop Defense
• Troop Health
• Damage-related bonuses
• March-related improvements
• Other combat technologies

Do not evaluate Glacieradon damage only by Hero Power.

Your total combat development matters.

Glacieradon Damage Optimization

The best way to improve Glacieradon performance is to optimize your entire combat system.

A useful priority is:

Heroes
  ↓
Hero Skills
  ↓
Equipment
  ↓
Troops
  ↓
Research
  ↓
Drone
  ↓
Formation
  ↓
Attack Timing

No single system determines your final damage.

Attack Efficiency

Because each Commander has a limited number of attacks, do not ignore the event after using the first few hits.

A good routine is:

1. Enter Glacieradon.
2. Use your strongest march.
3. Record the result.
4. Continue attacking while the challenge is active.
5. Monitor Glacieradon's remaining HP.
6. Coordinate the final attack if desired.
7. Make sure you use as many valuable attacks as possible before the challenge ends.

Should You Save Attacks?

There is no reason to waste all your attacks immediately if the Alliance has a long time remaining and you need to coordinate later.

However, waiting too long creates risk.

A good balance is:

Start
  ↓
Use attacks consistently
  ↓
Monitor HP
  ↓
Coordinate near the end
  ↓
Finish safely before the timer expires

Do not sacrifice the kill just to chase a perfect final-blow setup.

Final-Blow Strategy

Because the final blow gives a 10× attack reward, an Alliance can coordinate the final hit.

A simple method:

Glacieradon HP gets low
        ↓
Leadership announces final-hit coordination
        ↓
Members stop unnecessary attacks
        ↓
Chosen player attacks
        ↓
Glacieradon defeated
        ↓
10× final attack reward

The exact player chosen can be based on:

• Alliance rotation
• Fairness
• Player contribution
• Leadership decision
• Previous final-hit rewards

The Alliance should agree on its policy before the event if this is important to the group.

Critical Hit Strategy

Critical hits are random/probability-based outcomes rather than something players can simply activate on demand.

Therefore:

• Use your attacks consistently.
• Do not assume the next attack will be a critical.
• Do not waste attacks waiting for a specific multiplier.
• Treat critical rewards as bonus value.

The important optimization is maximizing the total value of your available attacks.

Glacieradon and Zombie Boss Farming

The event has two connected stages.

Stage 1 — Zombie Boss Farming

Alliance members:

• Kill Invading Zombies.
• Spawn Zombie Bosses.
• Rally against Zombie Bosses.
• Earn Zombie Boss rewards.
• Generate Glacieradon progress.

Stage 2 — Glacieradon

Once the Alliance reaches the required progress:

• Leadership starts Glacieradon.
• Members attack Glacieradon.
• Glacieradon HP is reduced.
• Critical hits can multiply damage/rewards.
• The final blow provides a 10× attack reward.
• Treasure appears after victory.
• Alliance rewards are sent by mail.

Zombie Boss Preparation

Because Zombie Bosses are what generate Glacieradon progress, the Alliance should stay active throughout the event.

Good habits:

• Kill Invading Zombies regularly.
• Join Zombie Boss rallies.
• Avoid letting available Bosses sit unused.
• Coordinate rally leaders.
• Keep stamina management in mind.
• Monitor the Glacieradon progress bar.

The more efficiently the Alliance farms the event, the sooner Glacieradon becomes available.

Glacieradon Timing Strategy

A strong Alliance should decide its Glacieradon window before the progress bar is completely filled.

Recommended planning:

Early Event

• Farm Zombie Bosses.
• Monitor Glacieradon progress.
• Identify the likely activation window.

Before Activation

• Announce the planned time.
• Make sure strong members are available.
• Confirm members understand the 30-attack limit.
• Check that the event has enough remaining time.

During Glacieradon

• Start attacks promptly.
• Monitor HP.
• Remind inactive members.
• Coordinate the final hit.
• Finish before the 60-minute window expires.

After Victory

• Collect Treasure.
• Check mail rewards.
• Confirm members received their rewards.
• Continue Zombie Invasion activities until the event ends.

Common Glacieradon Mistakes

Starting Without Enough Players

A Glacieradon challenge with poor participation can waste the Alliance's one opportunity.

Better approach

Announce the time and confirm participation before starting.

Treating Glacieradon Like a Normal Rally Boss

Glacieradon uses individual attacks and a personal attack limit.

Better approach

Coordinate individual attacks rather than relying on standard rally mechanics.

Ignoring the 30-Attack Limit

Every Commander has a limited number of attacks.

Better approach

Use your available attacks efficiently during the challenge.

Waiting Until the Last Minute

A late start creates unnecessary risk.

Better approach

Start early enough to allow for coordination and unexpected inactivity.

Ignoring Critical Hits

Critical hits can multiply both damage and attack rewards.

Better approach

Continue attacking consistently and take advantage of critical results when they occur.

Fighting Only for the Final Blow

The 10× final reward is attractive, but the Alliance still needs to defeat Glacieradon.

Better approach

Prioritize total Alliance success first, then coordinate the final hit when practical.

Forgetting Treasure

Defeating Glacieradon does not mean the Treasure should be ignored.

Better approach

Move to the Treasure location and collect it.

New Members Expecting Treasure

New Alliance members cannot collect Glacieradon Treasure until they have been in the Alliance for 24 hours.

Better approach

Do not depend on newly recruited players for Treasure collection.

Using a Weak March

Glacieradon is a damage race.

Better approach

Use your strongest available PvE squad.

Using a PvP Setup Automatically

PvP and PvE optimization are not always identical.

Better approach

Use the Hero and formation combination that performs best against the boss.

Glacieradon Checklist

Before starting:

• [ ] Glacieradon progress is complete.
• [ ] R4/R5 knows the planned start time.
• [ ] Alliance members have been notified.
• [ ] Enough players are available.
• [ ] Main PvE squads are ready.
• [ ] Equipment is correctly assigned.
• [ ] Hero Skills are ready.
• [ ] Drone setup is ready.
• [ ] Troops are sufficient.
• [ ] Enough event time remains.

During the challenge:

• [ ] Use your strongest march.
• [ ] Keep attacking.
• [ ] Monitor Glacieradon HP.
• [ ] Watch the remaining timer.
• [ ] Remind inactive members.
• [ ] Coordinate the final hit if desired.
• [ ] Do not let Glacieradon escape because of poor timing.

After victory:

• [ ] Collect Glacieradon Treasure.
• [ ] Check mail rewards.
• [ ] Verify final-blow reward if applicable.
• [ ] Continue Zombie Invasion activities.
• [ ] Review the Alliance strategy for the next event.

Recommended Alliance Strategy

A simple high-efficiency strategy is:

1. FARM ZOMBIE BOSSES
        ↓
2. FILL GLACIERADON PROGRESS
        ↓
3. ANNOUNCE START TIME
        ↓
4. PREPARE STRONG PvE MARCHES
        ↓
5. START GLACIERADON
        ↓
6. USE ATTACKS CONSISTENTLY
        ↓
7. MONITOR CRITICAL HITS
        ↓
8. COORDINATE FINAL BLOW
        ↓
9. DEFEAT GLACIERADON
        ↓
10. COLLECT TREASURE
        ↓
11. CLAIM MAIL REWARDS

Frequently Asked Questions

How many times can I attack Glacieradon?

Each Commander can attack Glacieradon up to 30 times during the challenge.

How long does Glacieradon remain active?

Once activated, the challenge lasts approximately 60 minutes.

How many times can an Alliance start Glacieradon?

An Alliance can start the Glacieradon challenge once per Zombie Invasion event.

Who can start Glacieradon?

The Alliance Leader and eligible R4 officers can manually start the challenge once the required Glacieradon progress has been reached.

What happens if Glacieradon is not killed?

Glacieradon leaves when the challenge expires and the Alliance receives a consolation reward instead of the normal full victory result.

What is the final-blow reward?

The player who deals the final blow receives a 10× attack reward for that attack.

What are Critical Hits?

Critical Hits are successful attacks that trigger a damage/reward multiplier.

They can deal significantly more damage and provide multiplied attack rewards.

Do I need to use rallies against Glacieradon?

No. The Glacieradon challenge uses individual attacks with a personal attack limit rather than the normal Zombie Boss rally system.

Can new Alliance members collect Glacieradon Treasure?

Not immediately.

New Alliance members must generally be in the Alliance for 24 hours before they can collect Glacieradon Treasure.

Should I use my strongest PvP squad?

Not necessarily.

Use the squad that gives you the best PvE damage against Glacieradon.

Is Power the most important factor?

No.

Actual damage depends on the complete combat setup, including:

• Heroes
• Skills
• Equipment
• Troops
• Research
• Drone
• Formation
• Other applicable bonuses

Summary

Glacieradon is an Alliance-wide Zombie Invasion challenge that rewards coordination, preparation, and efficient damage output.

The complete event flow is:

Kill Zombie Bosses
        ↓
Earn Glacieradon Points
        ↓
Fill Alliance Progress
        ↓
R4 / R5 Activates Glacieradon
        ↓
60-Minute Challenge
        ↓
Up to 30 Attacks per Commander
        ↓
Critical Hits Increase Value
        ↓
Coordinate Final Blow
        ↓
10× Final Attack Reward
        ↓
Defeat Glacieradon
        ↓
Collect Treasure
        ↓
Receive Alliance Victory Rewards

The most important rules to remember are:

• Farm Zombie Bosses to unlock Glacieradon.
• The Alliance can start Glacieradon once per event.
• The challenge lasts about 60 minutes.
• Each Commander has up to 30 attacks.
• Critical Hits can multiply damage and rewards.
• The final blow gives a 10× attack reward.
• Collect the Treasure after defeating Glacieradon.
• New Alliance members need 24 hours before they can collect Treasure.
• Do not start the challenge too late in the event.
• Use your strongest PvE setup rather than blindly copying a PvP formation.
• Coordinate the Alliance instead of relying only on individual Power.

Glacieradon is won by organization, not by one player. Farm efficiently, activate at the right time, use your attacks, coordinate the finish, and collect every reward.