Lucky Defense! Beginner Guide: Economy and Mythic Priorities

To consistently survive runs in Lucky Defense!, stop spending gold on every round. Your late-game damage and income rely on hoarding gold to compound interest through the Safe Box artifact and amplify attack power with the Money Gun artifact. Clear opening board missions during waves 1 through 10 to gather starting Lucky Coins, position crowd control at track intersections to avoid hitting the 100-monster loss limit, and prioritize upgrading Bandit to level 6 in your permanent account collection.

Gold Economy and Spending Thresholds

Unspent gold is an active damage and income engine rather than idle currency. The Safe Box artifact grants end-of-round compounding interest on your unspent gold balance, while the Money Gun artifact converts your total coin reserve into a team-wide attack boost. Spending all your gold on early summons eliminates both benefits.

Apply these spending rules during the first 30 waves:

• Establish a reserve: Maintain a baseline gold balance as soon as your starting units can defeat current creep waves.
• Limit mid-wave summoning: Use free and low-cost common summons to handle early waves instead of spending raw gold on extra summons.
• Delay attack upgrades: Upgrade troop attack levels only when creeps advance past the halfway mark of the path.
• Accumulate for late bosses: Allow interest to compound into tens of thousands of gold so the Money Gun can power your carries through late-game bosses.

Wave 1 to 10 Early Missions

Completing hidden opening missions provides bonus gold and Lucky Coins without draining your gold reserve. Trigger these four objectives before the first boss spawns:

1. Three of a Kind: Summon until you have three copies of the same common unit on the board to claim an immediate Lucky Coin bonus.
2. Board Repositioning: Move units across board tiles repeatedly to satisfy the movement mission requirement for extra currency.
3. The Gamble Attempt: Place a summon gamble roll early; win or lose, completing the attempt triggers a reward payout.
4. Early Dungeon Spawns: Summon and clear dungeon targets as soon as your board has enough single-target damage to earn instant coin rewards for Mythic merges.

Permanent Mythic Upgrade Priorities

Mythic Stones are scarce, so focus upgrades on units that unlock critical mechanics at specific level breakpoints instead of leveling your roster evenly.

Upgrade Bandit to level 6 before investing heavily into other units. Placing multiple level 6 Bandits near the entrance lets them attack immediately, creating a continuous flow of Lucky Coins. Upgrade Kitty Mage next to feed mana to heavy damage dealers like King Dian and Lancelot during boss fights.

Board Positioning and Mob Density Limits

A match ends in defeat immediately if the active monster count reaches 100, regardless of your remaining base health. Preventing overflow requires placing your utility units where monster paths converge.

• Cluster crowd control at intersections: Place stun units, such as Shock Robots and Mythic controllers, at central chokepoints where creep paths overlap to keep enemies inside your damage zones.
• Keep coin generators at the front: Place Bandits right at the mob spawn entrance so they begin generating currency the moment enemies enter the board.
• Center your damage carries: Position area-of-effect carries centrally so their attacks strike clusters frozen by your stun units.
• React at 70 monsters: If the active creep counter reaches 70, activate carry abilities or spend excess Lucky Coins on immediate Mythic merges to clear the board before reaching the 100-mob limit.

Account Shop and Diamond Spending

Spend diamonds in the permanent shop on Artifact Keys rather than direct unit recruits. Artifacts such as the Safe Box and Money Gun provide permanent mathematical advantages across all runs. Use gold from completed runs to buy guaranteed Mythic Stones and core artifact fragments during daily shop resets, aiming to raise essential artifacts to level 3 or 4 before diversifying into niche upgrades.