The Arc Welder fires several streams of electricity that guide themselves to enemies near them and damage them. It continues to fire as long as the trigger is held. It can hit several enemies at once, and has better range than its predecessor. It is an effective medium-close range weapon, being able to damage enemies over a wide area all at once without much aiming effort, though against single targets it is ammunition inefficient and doesn't do nearly as much damage as many of its alternatives. Its maximum range has a hard limit; it can't attack enemies that are far away. It also useless for destroying structures, since its beams only arc out to hit enemies.