The player must alternate between a tank named "Vanguard" and a helicopter named "Maiheriko" (and for the tenth and final mission, a boat named "Maiboto"), to kill enemies both on land and in the air. Some air-based enemies will leave behind powerups for Vanguard to collect, when hit by its anti-aircraft missiles; they can restore its fuel, increase its fuel capacity, make it invulnerable for a short period of time, and even grant it an extra life if it manages to collect enough of them (which is initially thirteen, but it can go up to sixteen).

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