Lucky Defense! Immortal Leveling Priority Guide

To get the most value from your upgrade resources in Lucky Defense!, commit your materials entirely to a single primary damage carry before upgrading support units. Splitting scarce materials across multiple Immortals leaves your board without the burst damage needed to clear boss checks and dense waves in Hard and Hell modes.

Immortal Investment Priority

Immortal guardians sit above Mythic units, providing higher base statistics, unique skill scaling, and passive abilities through an account-wide progression system outside of individual matches. Because leveling costs escalate rapidly, upgrade units based on their functional role on your board.

Priority Tier	Role	Primary Function	Investment Strategy
Top Priority	Main Carry	Single-target DPS, AoE wave clear, boss execution	Push directly to key passive breakpoints before upgrading others.
Secondary Priority	Enabler	Armor reduction, attack speed auras, team damage amplification	Level only to unlock essential debuffs after the main carry is stable.
Flex Priority	Specialist	Stuns, slows, wave stalling, crowd control	Leave at base level or low milestones; rely on utility over stats.

Upgrading a secondary damage dealer or utility unit while your primary carry remains under-leveled lowers overall clear consistency. Once your central carry reaches its operational milestone, allocate spare resources to enablers that amplify the carry's damage output.

Milestone Breakpoints and Upgrade Timing

Immortal scaling is concentrated around distinct level milestones rather than linear stat gains. Avoid spending materials incrementally for minor percentage boosts. Instead, upgrade in targeted pushes to secure specific ability modifications:

Early Milestones: Unlock vital base stability, expanding skill hitboxes, improving cooldowns, and raising base attack values so the unit can stabilize waves immediately upon being summoned.
High-Tier Breakpoints: Unlock transformative passive mechanics, including execute thresholds on low-health elites, multi-target basic attacks, or team-wide auras.
Stopping Points: Stop investing the moment a major passive breakpoint is reached. Bank subsequent gold, summoning stones, and ascension tokens until you have enough to reach the next meaningful tier in a single push.

Resource Management Rules

Because Immortal upgrade materials and gold fees are scarce, poor spending halts account progression. Follow these management rules to maintain an efficient economy:

Commit to one unit at a time: Never divide tokens across competing projects. Finish the target milestone on your primary carry first.
Protect your gold balance: High-level Immortal upgrades carry heavy gold costs. Retain adequate reserves for account-wide baseline upgrades and artifact enhancements.
Prioritize farming carries: Invest in units that directly accelerate your clear times on high-reward stages, ensuring faster and safer farming runs to fund future tiers.
Avoid speculative upgrades: Do not invest resources into an Immortal you draft infrequently or lack the board support to field reliably.

In-Match Board Placement and Synergy

A leveled Immortal carry requires specific board setups to translate account stats into cleared waves:

Central Lane Placement: Position your leveled carry on central tiles covering multiple lane intersections. This maximizes attack uptime as enemies travel along looping paths.
Armor Reduction and Attack Speed: Pair your carry with defense-shredding Mythic units and attack speed buffers. Flat armor reduction dramatically multiplies the high base damage of leveled Immortals.
Stall Positioning: Position crowd control units, such as stunners and slow providers, just ahead of your kill zone. Stalling enemy packs directly inside your carry's skill radius ensures ultimate abilities hit maximum targets before timers expire.