Use the following description of secondary weapons at Pigpen`s Shop to choose the weapon you really need:
Sky Rockets: target your enemy and explode in a colorful blast
Woodstock Mistle: a rocket which has a thrust like your airplane
Balloon Launcher: it shoots water Balloons
The Stinger: massive bees chase the enemy when locked
Potato Gun: this is a rapid-firing potato launcher
Flame Boomerang: this is a kinf of a On-Fire boomerang that can disable not more than 7 enemies at a time
Lightning Rod: this is a electric zapper that recharges quickly and fires a super big volt
Roman Candles: fires seperate fireworks
Snow Blower: this is a Fire and Freezing Blast
10 Gauge Pumpkin: it fires off Pumpkins
Machine Gun: this weapon is able for upgrades