Last Z City Walls Guide: Your Ultimate Defensive Barrier

In the unforgiving world of Last Z: Survival Shooter, your City Walls are the only thing standing between your resources and the relentless zombie apocalypse. While other buildings focus on production or offense, the City Walls are purely about Durability and survival.

🛡️

Defense Intelligence: The higher the Durability, the longer your base can withstand attacks from rival players and high-level zombie swarms before your defenses collapse.

Wall Progression & Durability Scaling

Every upgrade to your City Walls significantly boosts two key factors: the total Durability (HP of your base) and your Base Power. Keeping your walls leveled up is often a prerequisite for upgrading your Headquarters (HQ), making it a mandatory focus for every serious survivor.

Wall Level	Total Durability	Base Power Boost
Level 1-5	Up to 15.2 K	5,167
Level 10	280.8 K	45,757
Level 15	2.5 M	173,892
Level 20	22.5 M	515,414
Level 25	108.8 M	1,313,639
Level 30	388.1 M	3,140,777

💡 Survivor Pro-Tip:

Don't wait for an attack to realize your walls are underleveled. Level 30 Walls provide over 388 Million Durability. If you are pushing for the top 100 rankings in your State, your City Walls should always be at the maximum level allowed by your HQ to discourage "raiders" from picking you as an easy target.

Why Upgrade City Walls?

Beyond the obvious defensive stats, City Walls are a major contributor to your Total Power. In 2026, the meta strategy for the State Assessment involves timed wall upgrades to maximize power gain during building events. Since the resource cost is manageable compared to high-tier military buildings, it's an efficient way to climb the leaderboards.

City Walls Q&A

Q: What happens if my City Walls durability reaches zero?
A: Your base defense fails, and your settlement may be forcibly relocated to a random location on the map, often resulting in resource loss.

Q: Does the Wall protect my troops?
A: Indirectly, yes. It absorbs damage during a siege. However, troop survival also depends on your Hospital capacity and defensive Hero skills.

Q: Is there a maximum level for City Walls?
A: Currently, the game allows upgrades up to level 30 and beyond, following the HQ level limit. Each level exponentially increases Durability.