Hey,

Stick Merge Online is all about strategy and smart upgrades. As you merge weapons, focus on upgrading power and firing speed first — these drastically boost your combat efficiency. Don’t ignore defense and health upgrades, as tougher enemies appear quickly in later stages.

Weapon rarity matters too; always prioritize merging higher-tier items for maximum damage output. Coins are limited, so invest wisely in permanent upgrades rather than short-term boosts. Experiment with different weapon combinations to discover the most effective setups. With the right balance of offense and defense, you’ll climb the ranks and conquer every mission!