With new flame items being added such as the flammable rocket for the rocket launcher, and with the fire effects we’ve seen in devblog 60 I thought a flamethrower could fit the arsenal of weapons!
It should be a close-quarters type of weapon, perhaps for going inside bases and burning the inhabitants inside. However this comes at a big risk, I’ve read about flamethrowers from around WW2 and they were very dangerous to use with a high mortality rate for the users. This is because of the very flammable fuel tanks behind the user almost like a backpack. If these tanks were to be shot they would likely explode, which is why this could be a viable weapon for rust.
The weapon could do much damage to players, along with high damage to wooden bases. The flamethrower would also be very rare, hard to handle, and risky to use. If you get to close to your own flames with the weapon still equipped it will likely make you explode, if not catch yourself on fire. If anybody shoots your fueltank-backpack you will explode, or leak fuel (perhaps have a percentage ratio for whichever happens) and if it leaks fuel, it will leave a trail which then if shot the trail will catch on fire leading to you.
HOW IT COULD WORK
I was thinking that since it has a fuel tank, the fuel tank has to be worn. Perhaps in place of the metal plate armor. To bring up the actual hose of the flamethrower you would equip it like a separate weapon, but for it to spit flames you have to be wearing the fuel tank with low-grade (or high-grade fuel if we get that).