To clear enemy waves and progress efficiently in Portal Defense, concentrate your gold upgrades into one or two primary damage-dealing heroes—such as Gojo or Sung Jinwoo—while keeping support towers at base level. Spreading gold evenly across your entire board reduces overall performance; a small group of high-level carry towers defends significantly better against armored mobs and bosses than a full field of un-upgraded defenses.

Hero Roles and Placement Priorities

Selecting the right unit combination determines how smoothly you handle dense enemy spawns. Each top-tier hero fulfills a specific function in your lane defense:

HeroPrimary FunctionPositioning Strategy
GojoArea-of-effect (AoE) damage & crowd controlPlace near chokepoints or at the start of the track to maximize ability uptime on incoming crowds.
SukunaHigh-density AoE damagePosition to exploit maximum attack range; pair alongside slowing units to lock enemies in place.
Sung JinwooVersatile boss killing & swarm managementDeploy as a central main carry capable of penetrating high-armor mobs and single-target bosses.
First EmperorLane stalling & track controlPlace upstream of primary DPS clusters to delay advancing mobs and create longer firing windows.

Resource Allocation and Upgrade Milestones

Managing your gold economy efficiently prevents lane leaks as wave difficulties scale. Follow these core principles during defensive matches:

  1. Target Power Spikes: Spend gold to reach key upgrade thresholds that grant immediate stat leaps, such as expanded attack radius or increased attack speed, rather than buying minor incremental stat boosts.
  2. Funnel Gold Into Carries: Pick one main DPS tower (such as Sung Jinwoo or Gojo) and max its level first. This hero forms the anchor of your damage output.
  3. Minimize Support Investment: Keep slowing units and utility towers at their base level during the early-to-mid waves. Utility units fulfill their control function without needing high gold investment.
  4. Cluster Synergistic Towers: Position high-damage AoE towers next to stalling towers (like the First Emperor) to ensure slow-moving groups take maximum damage per wave cycle.
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Emily Johnson

Emily Johnson

Emily writes practical mobile strategy guides with a focus on resource planning, base progression, and the early decisions that shape a long-term account.