The game uses a side-view perspective and follows a linear sequence of battle stages. Players move through urban, industrial, and military environments, defeating infantry, machines, and large bosses before advancing to the next area.

The joystick moves the armor, while separate buttons control attacks and jumping. Defeated enemies can provide weapons or parts, and players can use punches, kicks, firearms, shields, and environmental objects. Up to three players can cooperate, with each machine offering different strengths and equipment.

Learn the attack range and movement of the selected armor before relying on special weapons. Preserve powerful guns and explosives for bosses, and use shields or vertical movement when surrounded.

Prioritize enemies carrying firearms and destroy dangerous machines before clearing weaker targets. In multiplayer, spread out enough to avoid blocking one another, but regroup quickly when a boss exposes a vulnerable point.