hack weapon - A weapon so good it makes the player look like a total beast

A weapon so good it makes the player look like a total beast. They’ll use it nonstop until the enemy is just a pile of dead bodies.

'That hack weapon is why I’m the beast of this match.'

'He’s got a hack weapon. I’m just a pile of dead meat.'

'She’s using her hack weapon like it’s her personal slaying machine.'