The main objectives in Zombie Waves include surviving waves of zombies, completing levels, and earning rewards to upgrade your character and weapons. Players must strategize their movements and resources to fend off increasingly difficult zombie hordes.

To upgrade your weapons and character, you need to collect currency and resources during gameplay. Access the upgrade menu from the main screen, choose a weapon or character, and spend your earned resources to enhance their capabilities.

Surviving longer requires a combination of movement, weapon selection, and resource management. Always keep moving to avoid being surrounded, choose weapons that suit your playstyle, and conserve resources for tougher waves.

Effective resource management involves prioritizing upgrades and weapon purchases. Focus on enhancing your primary weapon first, gather resources during gameplay, and use them wisely to prepare for tougher waves. Plan your upgrades based on the zombie types you encounter.

Unlocking new characters in Zombie Waves typically requires completing specific challenges or reaching certain milestones within the game. Follow these steps to unlock characters: 1. Engage in gameplay and progress through levels. 2. Complete the challenges presented (e.g., defeating a specific number of zombies). 3. Check the character menu for newly unlocked characters and their abilities. 4. Select the unlocked character to use in future gameplay.