This article is considered accurate for the current version (1.54) of the game.
Colm Gallagher’s engineers designed a variation of the Outlaw that features an independently rotating MG turret sitting atop the main armament of twin anti-tank cannons. What it lacks in raw firepower compared to its older sibling, the Highwayman more than makes up for it with versatility.
The Gallagher Highwayman Mk. III (also known as a Highwayman or abbreviated as HwM) is a late-game WardenCruiser Tank that possesses a boost capability when pressing Shift. It is equipped with a double-barreled, low-velocity 20mm main cannon, and a rotating 12.7mm Machine Gun turret (both turrets rotate independently of each other).
The Gallagher Highwayman Mk. III has 2700 HP and is disabled under 30% health. It has "Heavy Armor" resistance: it can soak small arms fire, shrapnel, and 12.7mm machine guns, and it is immune to Flamethrowers. But heavy explosives and anti-tank weaponry are a real threat to it. It has subsystems that have a chance to be disabled by heavy explosives and anti-tank weaponry if hit specifically: Tracks: 20% (Anti-Tank Mines always disable them), Fuel Tank: 30%, Turret/Cannon: 20%. It has Tank Armor. With it, in best case scenario, penetrating projectiles only have a 33% chance of penetrating and doing damage. That chance goes up quickly if the armor is worn or if it is shot from up close, or on the side or rear from a direct angle, or with ammo that has penetration bonuses. It takes 150 Basic Materials to fully repair it from 1% to 100% health with a Hammer. Its health, subsystems, and Tank Armor can be instantly repaired at a Garage for 100 Basic Materials.
The Gallagher Highwayman Mk. III, just like all Cruiser Tanks, are designed to flank enemy tanks, not charge frontally. Its low fuel consumption without boosting allow it to roam to find armored targets. It can defend itself against infantry with both its 12.7mm machine gun and dual 20mm main cannon if need be or even run away using its boost. When the Commander finds a target, you should use the tank's boost and maneuverability to flank and get as close as possible to the target. Although it is possible to use the Tank without a Commander, it's not recommended as it will limit your awareness on the battlefield.
Using the Highwayman as a means of disrupting tank formations allows tanks like the Silverhand - Mk. IV to push enemy tanks. This tactic not uncommon as it relies on more team communication to succeed. Generally speaking, it can serve a more supportive role with its machine gun to keep enemy infantry at bay from friendly tanks without anti-infantry capabilities. It is best to use this tactic if the opportunity to flank is unavailable.
Due to its short range, and inaccurate main cannon, it relies on its shear rate of fire, in order to do maximum damage. Due to 20mm ammunition having a decent chance of disabling subsystems, it is essential to target enemy subsystems to do the most damage. It can be potentially deadly in 1 vs 1 duals, as disabling the enemy's turret makes them defenseless, and disabling their tracks prevents them from quickly escaping.