蝙蝠战士在战斗中被敌军打伤，不得不落在一个陌生星球!然而在落地点周围，有大量的外星生物向他袭来！周围一片漆黑！使用超声波进行探测！战斗吧，战斗到最后一秒！

The bat commando is shot down by enemy fire and landed on an alien planet! Around the crashsite, a lot of vicious alien creatures are approaching. Use the supersonic waves to detect them and shoot them to protect yourself.