How to upgrade the rifle that fires at zombies

php editor Yuzi brings you the rifle upgrade guide for "Fire at Zombies"! In this exciting shooting game, your rifle is your go-to weapon, but how do you upgrade it to make your battles easier and more effective? With reasonable upgrade strategies and skills, you can double the power of your rifle and defeat more zombies easily! Next, let’s learn about the detailed upgrade methods to make you invincible in the game!

How to upgrade a rifle that fires at zombies

1. Enter the upgrade or transformation interface: In the game's main interface or weapon interface, find and click "Upgrade" or "Retrofit" option.

2. Select upgrade options: In the weapon upgrade or modification interface, you will see different upgrade options.

3. Use resources to upgrade: Select the firearm you want to upgrade and consume a certain amount of resources to complete the upgrade.

4. Challenge high-level zombies: Defeating more powerful zombies can get more rewards, which will help to improve the level of weapons.

5. Pay attention to limited-time reward activities: There may be specific activities in the game that provide high-end firearms as rewards.

6. Complete missions: You can obtain equipment and weapons by completing missions in the game, some of which can be used to upgrade firearms.

7. Purchase through the store: You can also purchase firearms and equipment in the store to enhance your combat effectiveness.

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