Last War Zombie Siege Guide: Waves, Rewards and Strategy

Zombie Siege in Last War is a cooperative alliance defense event where eligible bases face 20 increasingly difficult waves of Doom Legion attacks. Success depends less on one powerful player and more on preparation, wall defense, sensible difficulty selection, and reinforcing the alliance members who need help during the later waves.

The basic strategy is simple: collect enough Clue Points to unlock the event, bring your troops home, place your strongest defensive squad on the Wall, let capable members handle the easier waves independently, and concentrate alliance reinforcements where they can keep additional bases alive deeper into the event.

How Zombie Siege Works in Last War

Zombie Siege begins with your alliance collecting Doom Legion Clue Points through eligible Radar activities. Once the required clues have been gathered, an R4 or R5 can locate the Doom Legion base, select an available difficulty, and begin the challenge.

After the event starts, zombie forces attack eligible alliance members in repeated waves. There are 20 waves in total, with enemy strength increasing as the siege progresses.

Each individual attack is relatively short, with brief intervals between waves. Those gaps are your opportunity to monitor battle results, heal or reorganize where appropriate, and redirect reinforcements.

Exact failure rules, difficulty requirements, enemy strength, and rewards can change with server progression or game updates. Once a base reaches the event’s current failure limit, it stops receiving further Zombie Siege attacks. Check the live event rules before starting rather than relying on an older version of the event.

How to Unlock and Start Zombie Siege

The alliance cannot simply launch Zombie Siege whenever it wants. Members first need to contribute toward the event by collecting Clue Points from Radar activities.

Once the required amount has been reached:

1. An R4 or R5 locates the Doom Legion base.
2. The officer selects one of the available difficulty levels.
3. The event begins and eligible members start receiving zombie attacks.

Higher difficulty produces stronger attackers but also improves the available reward level. That does not mean your alliance should automatically select the highest unlocked option.

Choosing the Right Zombie Siege Difficulty

The best difficulty is one your alliance can push through consistently. Picking an unnecessarily high level may cause weaker members to drop out early, reducing the alliance’s total number of successful defenses.

When selecting a difficulty, consider:

• How comfortably the alliance cleared the previous Siege.
• How many members were eliminated before the final waves.
• Whether weaker members had enough reinforcement support.
• How much the average troop, hero, and defensive strength has improved since the previous attempt.
• Whether members will actually be online and prepared when the event starts.

Zombie Siege Eligibility

Not every alliance member is automatically eligible to receive attacks or collect every event reward. Common participation conditions include:

• Being in the alliance for more than 48 hours.
• Not having been offline for more than 72 hours.
• Meeting the Headquarters requirement for the selected difficulty.
• Not being in an incompatible cross-server state when the event begins.

Requirements can be adjusted between event versions, so members close to any eligibility limit should confirm their status in the Event Center before the alliance starts the siege.

Zombie Siege Preparation Checklist

1. Recall Your Troops

Do not leave your main combat formations gathering resources or performing unnecessary map activities when Zombie Siege begins. Your strongest defensive troops need to be available at your base.

Alliance leadership should announce the start time early enough for members to finish long marches and return their important formations.

2. Set Your Wall Defense

Assign your strongest suitable defensive formation to the Wall before the first wave arrives. Forgetting to configure base defense is one of the easiest ways for an otherwise capable account to perform badly during the event.

Prioritize a balanced defensive squad that can stay alive under sustained pressure. Strong frontline durability and reliable damage are generally more useful than building entirely around short PvP burst damage.

3. Heal and Prepare Troops

Enter the event with your main defensive troops available rather than carrying avoidable wounded losses from earlier activities. Your alliance should also avoid scheduling major troop-intensive activities immediately before the siege.

4. Identify Members Who Need Help

R4 and R5 officers should know in advance which members are likely to struggle. A simple reinforcement plan prevents several strong members from piling into the same base while another vulnerable player receives no support.

5. Stay Available During the Event

Members who remain online can react to battle reports, call for support, reinforce teammates, and reposition squads. Zombie Siege becomes harder to coordinate when a large part of the roster disappears immediately after the first waves.

Best Reinforcement Strategy

Reinforcement management is where coordinated alliances gain the biggest advantage.

Let Strong Members Handle Early Waves

If a member can comfortably defend alone, reinforcing that base during the opening waves provides little alliance benefit. Keep your additional formations available for players who actually need support later.

The early waves are useful for identifying which bases are performing below expectations. Watch the results rather than sending reinforcements everywhere immediately.

Start Supporting Vulnerable Bases Before They Collapse

Once the difficulty begins increasing, send strong formations to members who are approaching their limit. Reinforcing too late can leave the alliance reacting after an avoidable failure has already occurred.

A useful structure is to assign strong players to specific weaker members before the event starts. That creates clear responsibility and reduces duplicated reinforcements.

Redirect Squads When Your Own Participation Ends

If your base can no longer receive Zombie Siege attacks under the current event rules, your remaining formations can still be valuable to the alliance. Use available squads to reinforce members who are continuing through the later waves.

This is especially valuable near waves 16–20, when every additional surviving base contributes to deeper alliance progress.

Best Heroes and Squads for Zombie Siege

Your strongest developed formation is usually more useful than forcing an undeveloped hero combination simply because it looks ideal on paper. Zombie Siege favors heroes that perform well during sustained PvE combat.

Useful characteristics include:

• Durable frontline heroes that prevent your damage dealers from being overwhelmed.
• Area damage that performs well against repeated groups of zombie attackers.
• Defensive or team-wide support that improves squad survival over the full engagement.
• Well-developed heroes with appropriate levels, skills, gear, and related combat systems.

Heroes such as Kimberly and Tesla can contribute strong damage, while defensive heroes such as Williams and Murphy can help stabilize the frontline. Marshall, Lucius, or similar support-oriented options may also be useful depending on the formation you have developed.

Do not weaken your squad just to copy a specific five-hero lineup. A heavily invested Tank, Aircraft, or Missile formation that you already use effectively will often outperform a theoretically better Zombie Siege setup built from underdeveloped heroes.

Wall, Research and Account Progression Matter

Hero strength is only one part of Zombie Siege. Base and combat progression also influence whether your formation survives increasing wave pressure.

Before pushing a harder difficulty, review:

• Wall and defensive development.
• Troop tier and total usable troop strength.
• Relevant defensive and combat research.
• Hero levels and skills.
• Hero gear and available equipment systems.
• Drone and other combat upgrades currently unlocked on your server.

If your alliance repeatedly fails at approximately the same stage, the answer may be broader account progression rather than changing one hero.

Zombie Siege Rewards

Zombie Siege has both personal and alliance-oriented rewards. Personal progression is tied to how far your own base survives, while alliance rewards improve as the alliance collectively withstands more attacks.

Depending on the current event version and server progression, rewards can include items such as:

• Diamonds
• Hero EXP
• Drone materials
• Resources
• Speedups
• Zombie-related event currency
• Other progression materials

Available items, reward quantities, and event-shop contents can change between versions. Check the active reward screen before deciding whether moving to a harder difficulty is worthwhile for your alliance.

Common Zombie Siege Mistakes

• Forgetting Wall defense: Having powerful heroes does not help if they are not properly assigned to defend your base.
• Keeping troops on the map: Gathering and other deployments can leave your base weaker when the waves arrive.
• Trusting a shield: Zombie Siege attacks bypass shields.
• Reinforcing everyone immediately: Strong players should preserve support capacity for the members who actually struggle.
• Choosing difficulty based on your strongest member: Zombie Siege rewards alliance-wide performance, so the wider roster matters.
• No reinforcement assignments: Multiple players can waste capacity on one base while another receives nothing.
• Ignoring Radar activity between events: Clue collection is required to progress through the Zombie Siege system.
• Copying a hero lineup without considering investment: A developed formation is usually better than an underleveled collection of supposedly ideal heroes.

R4 and R5 Zombie Siege Checklist

1. Confirm enough Clue Points have been collected.
2. Choose a difficulty appropriate for the alliance’s current strength.
3. Announce the planned start before launching the event.
4. Remind members to recall troops and configure Wall defense.
5. Identify weaker bases and assign potential reinforcers.
6. Monitor the early waves rather than reinforcing automatically.
7. Redirect support toward struggling members as difficulty increases.
8. Concentrate available reinforcement power during the final waves.
9. Review where members failed so the next difficulty decision is based on actual performance.

Optional Faster Starting Point

Players who prefer starting from a more developed roster rather than progressing a fresh account through every early upgrade can also browse Last War accounts for sale on Heaven Guardian. When comparing accounts, check the developed heroes, troop progression, Headquarters level, and overall formation strength rather than looking only at displayed total power.

FAQs

How many waves are in Zombie Siege?

Last War Zombie Siege has 20 escalating waves of attacks against eligible alliance member bases.

How do you start Zombie Siege?

Alliance members first collect Clue Points through eligible Radar activities. Once the requirement is met, an R4 or R5 can locate the Doom Legion base, select a difficulty, and start the event.

Do shields protect against Zombie Siege?

No. Zombie Siege attacks bypass shields, so members still need troops available and a proper Wall defense.

Should strong players reinforce immediately?

Usually not. Members who can comfortably survive the early waves should defend themselves while stronger players preserve extra formations for allies who begin struggling later.

What happens when my base fails?

Once your base reaches the current event’s failure limit, it will stop receiving additional Zombie Siege attacks. The exact knockout rule has changed between event versions, so check the live rules on your server.

What difficulty should my alliance choose?

Select a level that provides a realistic chance of pushing deep into all 20 waves. Increasing difficulty is worthwhile when the wider alliance has become strong enough to survive it, not simply because the level is available.

What is the best squad for Zombie Siege?

Use your strongest well-developed defensive formation, prioritizing frontline durability, sustained damage, and useful PvE abilities. Do not replace highly developed heroes with much weaker alternatives simply to copy a preset lineup.

Why are Clue Points important?

Clue Points are required for alliance leadership to locate the Doom Legion base and access Zombie Siege. Consistent Radar participation helps the alliance continue progressing through available difficulty levels.

Conclusion

The most important lesson in this Last War Zombie Siege guide is that the event rewards alliance organization. Bring your troops home, configure the Wall, choose a realistic difficulty, and avoid wasting reinforcements on bases that can already defend themselves.

As the 20 waves become stronger, shift formations toward weaker members and prioritize keeping more of the alliance active instead of concentrating every resource on the strongest accounts. Between sieges, continue improving heroes, troops, defensive systems, and Radar participation so your alliance is ready to move up in difficulty when the roster can support it.

For more event strategies, progression advice, and alliance guides, explore our additional Last War Survival guides.