This article is considered accurate for the current version (1.54) of the game.
Originally designed in response to increasing swarms of Mesean armour, the Outlaw is an exceptionally capable medium tank armed with a long-range 40mm turret and includes a built-in storm rifle support position.
— In-game description
The Gallagher Outlaw Mk. II is a late-game WardenCruiser Tank that possesses a boost capability when pressing Shift. It is equipped with a 40mm cannon and a hull-mounted 7.92mm machine gun.
The Gallagher Outlaw Mk. II 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 Outlaw Mk. II, like all Cruiser Tanks, are designed to move fast and avoid enemy fire. With its long range main cannon, and the speed boost function, it should be used to flank enemy tanks and take shots at them before the enemy can get into own range to counterattack. It is recommended to use the boost functionality while getting close to other vehicles to attack them.
Despite having one of the longest max range of any late-game tank (at 45 meters), this should not give the crew the idea that they are invincible. If an enemy tank "closes the gap" (i.e. driving towards them to use their armament), the low health and moderately high armor HP of the tank, can be quickly depleted, disabling, or outright destroying the tank.
Although it is possible to use the tank without a Commander, it's not recommended as it will limit your awareness on the battlefield.