How to Clear Spec Ops 17-24 in Last Z: Survival Shooter

To clear Spec Ops stages 17 through 24 in Last Z: Survival Shooter, shift from passive defense to active lane management: kite infected into clusters, stagger your hero skill cooldowns, and manually intercept fast targets before they reach your barriers.

Target High-Threat Enemies and Group Waves

Spec Ops stages 17–24 increase enemy density and movement speeds. Relying solely on auto-fire or passive turrets allows fast-moving infected to break through defensive lines.

• Manual Target Acquisition: Direct your hero to prioritize fast-moving infected pushing toward structural barriers.
• Kiting for AoE Efficiency: Move your hero to group infected into tight clusters before unleashing area-of-effect (AoE) abilities. Avoid wasting skill cooldowns on isolated stragglers.
• Central Positioning: Keep your hero near the center of the field to maintain coverage over both lanes during intense waves.

Stagger Hero Skill Cooldowns

Waves in stages 17 through 24 spawn in rapid succession. Stages 22–24 increase enemy durability, making sustained damage crucial.

• Timing Skill Deployment: Avoid firing all hero skills at the start of a wave. Save high-damage abilities for peak enemy density in the middle or end of a swarm.
• Rotating Hero Abilities: Monitor the skill icons at the bottom of your screen. When deploying multiple heroes, stagger their ability activations to cover individual cooldown downtime and maintain continuous damage.

Protect and Utilize Defensive Barriers

Barriers funnel incoming infected into predictable kill zones and preserve structural integrity needed for high-stage ratings.

• Pathing Control: Position barriers to channel enemy waves into a single concentrated line of fire for your hero.
• Interception and Support: If a barrier reaches critical health, pull your hero back slightly to intercept incoming swarms directly in front of the structure, giving it a moment of respite.

Maintain Lane Control and Spawn Awareness

• Active Patrols: Shift your hero continuously between barriers rather than staying stationary. Focus fire on the lane currently experiencing the highest concentration of enemies.
• Spawn Signal Reaction: Watch spawn indicators on the edges of the map. Move toward indicated spawn points early to engage incoming swarms far from your base entrance.