Battle Walker

"A mechanical actuator system that is mounted on your legs and activated on demand. Once activated, mechanical supports extend, allowing you to access new areas, vertical covers or other tactically advantageous positions."

―In-game description.

A pair of retractable metal stilts which B.J. is able stand, walk, and shoot from without balance issues. As the Battle Walker is the primary contraption for a "Tactical" playstyle the abilities it grants are more well-rounded compared to the specialized Constrictor Harness and Ram Shackles.

Abilities

• Wanderer: Main function, activated by double-pressing the jump button. Extending the stilts allows access to elevated platforms or passages for more thorough exploration of an area. In combat, this ability can be used to exploit tall objects for cover while still being able to fire over them or to reach enemies firing from elevated positions for a takedown.
• Quick Draw: Time is slowed down when the Weapon Wheel is displayed, allowing for safer switching between weapons mid-fight.
• Adrenaline: A boost of 3 health is granted every time an enemy is killed. All kinds of enemies and all weapons trigger the effect.
• Stamina: Overcharged health only begins draining once damage is taken, and stops draining when health is restored. Naturally this synergizes well with the adrenaline ability. Unlocked by completing the Irina Yakova/Septimus Stubbins side quest on the Eva's Hammer.

Location

If not selected as the initial contraption, they are found in the Transporthalle on Venus during the relevant Übercommander mission.