Defeat Monstro and other Unversed in the Monster of the Deep challenge, unlocked at Arena Level 25 in Kingdom Hearts II. Earn 675 Medals.
- 1Round 1: Defeat 8 Axe Flappers, 4 Blue Sea Salts, 7 Bruisers, and 4 Scrappers.
- 2Round 2: Battle Monstro.
- 3Round 3: Defeat 4 Axe Flappers, 8 Shoegazers, 7 Thornbites, and 3 Triple Wreckers.
- 4Round 4: Battle Monstro.
- 5Round 5: Defeat 4 Axe Flappers, 6 Blue Sea Salts, 8 Bruisers, and 5 Triple Wreckers.
- 6Round 6: Battle Monstro.
- 7Round 7: Defeat 4 Axe Flappers, 6 Blue Sea Salts, 8 Bruisers, and 5 Triple Wreckers.
- 8Round 8: Battle Monstro.
Boss: Monstro
Monstro has 1500 Health Points and is immune to all status effects. It has a 1.0x weakness to Physical, Fire, Blizzard, Thunder, and Dark attacks.
The initial part of the battle takes place inside Monstro, where you must defeat Unversed to break free. Once freed, you have three minutes to deal as much damage as possible. Use the explosive barrels on the islands to stun Monstro, causing its tongue to hang out, creating a platform for attacks. Dodge Monstro's wave attacks.
The Iron Imprisoner IV has 36 Strength and 19 Defense. It is immune to all status effects and has no elemental weaknesses. It can teleport, draw you in for an explosion, and repeat this pattern. You can dodge both the draw-in and the explosion. When the screen turns red, fragments will fly around; the Iron Imprisoner IV is not present during this attack, making it easy to dodge. The fiery spin and black glowing explosion combo can occur at any time. The safest opportunities to deal damage are after the cage attack or as it finishes its spin, using a Shotlock.
- Use the explosive barrels during the Monstro fight to create an opening.
- Dodge Monstro's wave attacks.
- Shotlocks are effective after the cage attack or spin attack against the Iron Imprisoner IV.
- Dodge the Iron Imprisoner IV's teleportation and explosion attacks.
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