Skip to content
Part 24
Ninja Gaiden 4

Part 24

Master Chapter 9 of Ninja Gaiden 4: Hidden Underground. Find collectibles, solve puzzles, and defeat Hydracubus Part 2 with this complete walkthrough.

By ···10 min read·Multi-source verified
1 reading this guide  

Master Chapter 9 of Ninja Gaiden 4: Hidden Underground. Find collectibles, solve puzzles, and defeat Hydracubus Part 2 with this complete walkthrough.

Walkthrough
  1. 1
    After defeating the Bone Dragon, collect the Lives of the Thousand Gods #3 to increase your HP.
  2. 2
    Return to the Save Point at Inner Econtra and SAVE your game. Do NOT jump down from Econtra Babel Specus immediately.
  3. 3
    Jump down to the area with the Bone Dragon's body.
  4. 4
    In the Underground Cemetery, find Golden Scarab #16 in a wall alcove near the Bone Dragon's body.
  5. 5
    Enter the Coffin Chamber. Defeat the four Archers and Apparitions.
  6. 6
    Proceed to Muramasa's Statue. Upgrade the Dragon Sword to Level Three if you haven't already. Restock items.
  7. 7
    Use the Save Point and open the chest to find the MAP for the area.
  8. 8
    Exit to the Suspension Bridge Room. To the left of the exit, find Life of the Gods #9. To the right, find Golden Scarab #17. Do not walk on the bridge yet.
  9. 9
    Jump down to the bottom of the Suspension Bridge Room. Defeat the Zombies and Shadow Fiends.
  10. 10
    Enter either the Red Eye Chamber or the Blue Eye Chamber.
  11. 11
    Red Eye Chamber: Run across the water, avoiding Archer arrows. Kill the Archers and press the Red Eye button. Find Golden Scarab #18 underneath the Red Eye button area by swimming.
  12. 12
    Blue Eye Chamber: Kill the nearby Archer and replenish arrows. Go down the stairs, hide behind pillars, and shoot the remaining Archers. Shoot the glowing Medallion on the upper wall to reveal a pathway. Navigate the pathway, avoiding pendulums (you can shoot medallions above them to slow them down). Use a Wall Run to reach and press the Blue Eye Button. Find Golden Scarab #19 underneath the platform.
  13. 13
    After pressing both buttons, return to the Suspension Bridge Room. The large door will be unlocked.
  14. 14
    Boss Battle: Hydracubus Part 2. With your Dragon Sword at Level Three, slice off its tentacles. Get close and use a Gleaming Dragon Ultimate Attack (rotate Analog Stick 360 degrees and press Triangle). Repeat until defeated.
  15. 15
    After the battle, collect Lives of the Thousand Gods #4.
  16. 16
    Exit back to the Suspension Bridge Room. New pillars have emerged. Use a continuous Bird Flip to reach the top of the room.
  17. 17
    Cross the bridge back to the previous Save Point.
  18. 18
    On the throne seat, collect the Jewel of the Demon Seal #1, which upgrades Ninpo Scrolls.
  19. 19
    Continue to The Great Corridor. SAVE at the Save Point.
  20. 20
    Descend the corridor, defeating Archers and Zombies.
  21. 21
    Search the nearby dead body to find the ART OF THE ICE STORM Ninpo Scroll.
  22. 22
    Continue to the Chamber of Everlasting Sleep. Defeat the bats at the entrance using Shurikens or Flails.
Tips
  • Equip all nine Life Of The Gods items to significantly increase your health bar.
  • Use Incendiary Shurikens against the Archers and Apparitions in the Coffin Chamber if you have them.
  • The Gleaming Dragon Ultimate Attack is highly effective against Hydracubus Part 2.
  • Use cover behind pillars in the Blue Eye Chamber to safely eliminate Archers.
  • Wall Running is essential to reach the Blue Eye Button.
  • Lives of the Thousand Gods #3 & #4 (HP increase)
  • Golden Scarabs #16, #17, #18, #19 (for upgrades)
  • Map for the area
  • Jewel of the Demon Seal #1 (Ninpo upgrade)
  • Art of the Ice Storm Ninpo Scroll
  • Defeat of Hydracubus Part 2

100% Human-Written. AI Fact-Checked. Community Verified. Learn how AntMag verifies content