The minigun is overpowered, sniper rifles are good, but all the rest is total crap...
Buying the smg and shotgun will hurt you more than help you.
When you get the minigun at the last boss with some tequila, you kill that boss in less than a second...
 "Tequila Zombies 2"){kind=icon}
 "Bee Honey"){kind=icon}
 "Tequila Zombies"){kind=icon}
 "Defend Your Nuts"){kind=icon}