Every time you finish a level you are put in a new location with a new gun, and you must survive as many levels as you can. Every five levels you must face more enemies. It has a zombie mode, gamepad support, a custom rules mode, and two-player local co-op.

Features
• Two-player Co-op (Local)
• Custom Rules Mode
• Zombie Mode
• Ten Locations
• Ten Guns (including cross bows, rocket launchers, and mini guns)

Try the Demo
https://play.google.com/store/apps/details?id=com.grantsgames.GunUpgradeDemo

More Details
Offline: Yes
Input Methods: touchscreen, keyboard+mouse, & gamepad
Players: 1-2 local co-op
Export/Import Save: Yes
Save Files: 4
Install on External Storage: Optional
Multi-Window Support: Yes
Categories: top-down shooter
Themes: 2d, war, survival

Step 1. Download Gun Upgrade Mod (Premium) APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.Gun Upgrade Mod (Premium) APK will begin installing on your device. Simple.

Step 1. Download HappyMod APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.Search Gun Upgrade Mod, click Download.
Step 4: You can download 100% working mods on HappyMod with one click.