One of the hardest bosses in the first 3D Ninja Gaiden has to be Marbus. He's challenging in both story mode and mission mode, but his appearance in Eternal Legend and Descent of the Fiends 5 is ...

which is modeled after Ryu Hayabusa's iconic getup in the Ninja Gaiden series. It's a stylish and practical armor set, but if you want to get it, you'll need to make a fair bit of progress into ...