Railgun

Damage: 600
Call-In Time: 3 Seconds
Permit Type: Supply
Fire Mode: Charge-Up
Ammo: 1+20
Source: Patriotic Administration Center
While firing some fancy shoulder-mounted laser beam sounds fantastic on paper, the simple concept of launching an old-school high-speed ball of metal through the carapace of a mutant bug and tearing it to shreds from within creates genuinely memorable moments.
Helldivers 2’s Railgun suffers from a few notable problems, like its slow reload time and a severe lack of ammunition. It makes up for these downfalls by one-shotting many of the game’s most troublesome enemies, just not the Bile Titan. You can do some severe damage when overcharging the weapon, though.