Flamethrower should instead of having a clip, have its ammo continuous, but you keep the impact damage when you get shot while using (hopefully it also sets you on fire too). Having its range shortened and unable to go over walls is good. It is a flame thrower after all with downsides, so you should at least be able to shut down an area with it at the risk of your own safety. Decrease its ammo to like 100 or so and have it use its own type so that it won't effect other weapons in its category (if applicable)
zones ammo system is not set up like eras. All of zones ammo is locked in, that means all of the clips are based off 1 ammo type like Energy is 18 rounds and low energy is 12 rounds. Also since theres a ammo depletion bug, you would only be able to use the flamethrower once since its clip would be 250, if you unequip it then reequip it, then you lose 250 ammo, max ammo stack is 250. Do the math 250-250=0.
The flamethrower just needs to be completely redone. it for starters needs a bullet graphic, the burn effect should stack, so everytime you get hit you get burned for 2 seconds and it adds on everytime you're hit. Im not against and actually want the flame thrower to be like eras where once the flamethrower hits something it sets fire to it. Problem with eras is that the fire last way to long, zones flamethrower should just instead once flamethower hits max range it just leaves a little pile of lava lasting only like 3 seconds and if anyone touches it, they are burned for 2 seconds. This way the lava gun is still far superior to the flamethrower for lying down a defensive perimeter and the lava is way more deadly.
What also would be cool is if the gun had a .5 shooter hitpoint unless you buy a suit that protects you from the heat coming from the gun. If you have the suit on, you have no penalty when using the gun.
Honestly, instead of increasing the shotgun's damage you should decrease it while adding in more pellets per shot. You know, like a real shotgun. Have shoot out around 8-10 pellets with each one doing 1 damage, while having a very wide spread. This will emphasize getting into their face and almost molesting them with the shotgun, as opposed to firing and getting a minimum of 5 damage from far away. Initial range will have to be hell-shortened though. Also make the god damn appirces fire 4 bullets dammit!
Oh hell no, no way im adding in more bullets for the gun. It would either be garbage, or the PBP. The gun would be way too ineffective at max range. If you even izone and use the shotty, you will notice that it has a massive spread at range and 90% of the time, you end up with only 1 hit because how far apart the bullets are. It would also completely neglect aiming, because 1 shot and you will always get a hit. Zone did the shotgun correctly, it just suffers from low damage.