Ever gun in GunGirl 2 can be upgraded multiple times. Each gun has 3 power levels which you can upgrade by collecting the purple G’s that enemies drop. Besides that, you can find special power-ups that enable an alternate fire mode and several other new features for every gun.

Pistol
	This is the standard gun you begin with. It shoots a straight line until it hits an enemy or obstacle.  It deals decent damage and is very versatile, even in late game.
Level 1: simple revolver, 8 rounds, slow reload, 1-3 damage Level 2: semi-automatic pistol, 12 rounds, faster reload, 1-3 damage Level 3: two semi-automatic pistols, 24 rounds, fastest reload, 1-3 damage
Shotgun
	A girl’s best friend. The shotgun makes close combat a real treat. It uses 12g buckshot ammunition, which blasts every nearby zombies into pieces.
Level 1: standard shotgun, slow reload, slow bullet speed, 6-18 damage Level 2: tactical shotgun, fast reload, fast bullet speed, 6-18 damage Level 3: automatic shotgun, no reload, fast bullet speed, 6-18 damage
Icicle Gun
	This fully automatic rifle shoots frozen ice bolts. The higher your level, the higher the rate of fire. On the third level, the Icicle Gun can also freeze your opponents.
Level 1: old model, slow firing speed, 1-6 damage Level 2: upgraded model, fast firing speed, 1-6 damage Level 3: liquid ice enhanced model, fast firing speed, 1-6 damage, freezes enemies and turns them into ice bombs that explode for 8-48 damage
Fireball Launcher
	This thing shoots massive fireballs that explode on impact, making it an excellent weapon for killing multiple enemies at once. When you get to level 3, it shoots two fireballs simultaneously.
Level 1: slow firing speed, max two fireballs on screen Level 2: fast firing speed, max three fireballs on screen Level 3: fast firing speed, max six fireballs on screen, fires two fireballs at the same time
Sawblade Cannon
	No further informations released.
Unknown
	Only hell knows, what this thing is…