Some people may already know this but there are thrusters and cannons in the game it is in the upper left corner the word "EXTRA" and you will find it but you need to be a supporter
You can get 4 of the same weapons at the same time just go back and fort on where you got the weapon you like except for molotovs click + if this helps
 "Raft Wars"){kind=icon}
 "Epic Combo!"){kind=icon}
 "Sonny"){kind=icon}
 "IncrediBots 2"){kind=icon}
 "IncrediBots"){kind=icon}
 "Crush The Castle 2"){kind=icon}
 "ButtonHunt 2"){kind=icon}
 "Raze"){kind=icon}
 "Zombies Took My Daughter!"){kind=icon}
 "Cover Orange 2"){kind=icon}
 "Cover Orange"){kind=icon}
 "Johnny Rocketfingers 2"){kind=icon}
 "Thing-Thing 4"){kind=icon}
 "Destroy the village"){kind=icon}
 "ROLY-POLY Eliminator"){kind=icon}
 "Roly-Poly Cannon 3"){kind=icon}
 "Roly-Poly Monsters"){kind=icon}