Reloading should be slower with a very high sleep
Its bullets should do 1 dmg and explosions do the rest of the damage
Players shouldn't move when they are trying to spam with the chem gun and should unable to chase poor eralians like the BAR, Minigun, and AA Shotgun
The bullets should be 100% accurate than random so it won't be difficult to cross the deadly spam.
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Make the gun hardwork rewarding, not stupidly broken.
If the gun will run out of ammos, they should go somewhere safe and reload there so its possible to avoid them or counter them.