任务：15-FOOTPRINT OF PHANTOMS
主线任务：Eliminate all Walker Gears
摧毁4架步行机
次要任务：Extract 2 prisoners being held at Ditadi Abandoned Village
营救2名人质
主线任务：Extract all Walker Gears
用气球回收4架步行机
次要任务：Pick a digitalis (lutea) at Ditadi Abandoned Village
找到一颗黄草(在山的背后)
次要任务：Extract a truck at Ditadi Abandoned Village
用气球，回收一辆卡车
