Ninja Gaiden II/Chapter 8: Submit, or Die!

"Several hundred kilometers north of the snowy crash-site of the Daedalus, Greater Fiend Zedonius has awakened to threaten a once-great military state. The malevolent Ruler of Flame issues an ultimatum handed down from the Infernal Priest Dagra Dai to the people of the world: Accept the yoke of the almighty Archfiend, or die. And so Earth's baptism by fire begins. The taunts of the Greater Fiend of Flame fill Ryu's mind."

After the intro cutscene, you will begin this level facing a Muramasa Statue. Drop in and stock up if you must, and open the chest to your left for some arrows. You'll soon need them as when you head toward the fortification ahead, Rocket Soldiers will attack you from behind it. A solid charged arrow will take them out, or you can try to hit the barrels next to them to take them both out. When you do, another group will back them up. Kill them and advance quickly to the fortification and look behind you. Depending on how many Rocket Soldiers you have killed so far, you may be attacked from behind by another group of Rocket Soldiers. Continue around the corner to be attacked by four more Rocket Soldiers. Seek cover and take out the barrels near them to clear the area. Head to the fortification that they were shooting from. Jump over it and enter the open area.

In this open area, you will be attacked by several Mecha Fiends, backed up by Rocket Soldiers. Take out the Rocket Soldiers with Ninpo from a distance and then move on to the Mecha Fiends. Move forward and head right. At the turn, in the right corner, there is a chest containing Red Ki Essences. Move forward to be attacked from the front and behind by several Rocket Soldiers. Head through the door on the right and then use the Dragon Statue to save/heal.