In order to access the sewers, a manhole cover tool must be located. A guard has been seen with such a tool In the German Courtyard. This area can be accessed by sneaking through the German Mess Hall and Administration Building and out Into the German C

• 要进入下水道，一定要先找到通道盖子工具。有人注意到有一个在德军广场里面的警卫有这样的工具。要进去德军广场的话，可以经由德军餐厅大厅和管理大楼，出去就是德军广场了。