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How to Get the Ultimate Cannon in Kingdom Hearts: Birth by Sleep

In "Kingdom Hearts: Birth by Sleep," powerful attacks called Shotlocks help you defeat some of the game's toughest enemies. Terra's final Shotlock, called the Ultima Cannon, turns your Keyblade into an explosive weapon that blows up monsters with every strike. You can only earn the Ultimate Cannon as a prize in the Mirage Arena. You'll need to take down two Iron Imprisoners in the "Keepers of the Arena" mission to get your reward.

Instructions

- 1
  Go to the Mirage Arena and beat the first 11 bosses. To unlock the second mission, "Weaver Fever," you need to beat Terra's game and complete the Enchanted Dominion level. For the third mission, "Wheels of Misfortune," you must beat Aqua's game and complete the Castle of Dreams level. To unlock mission nine, "A Time to Chill," complete the Olympus Coliseum with Aqua.
- 2
  Reach Arena Level 20 or higher to unlock the "Keepers of the Arena" mission. You might need to replay the earlier missions a few times to gain levels. You can also gain levels by completing the Arena's mini-games. For example, in the Rumble Race game, beat the Country Chase course in under two minutes and 30 seconds to gain one level.
- 3
  Prepare your Deck Commands before you enter the fight. Use abilities like Once More, Second Chance and Curaga, as well as your most powerful elemental attacks, such as Firaga or Thundaga.
- 4
  Start the "Keepers of the Arena" mission. Defeat the first three waves of enemies to draw out the Iron Imprisoner III.
- 5
  Beat the Iron Imprisoner with your magic attacks and Shotlocks. This boss attacks quickly and rarely pauses, so keep dodging and stay on the move to avoid getting hit.
- 6
  Win the next four rounds of the fight. After the fourth round, the Iron Imprisoner IV will confront you. This boss is similar to the Iron Imprisoner III, but he can teleport and hit you with explosive magic. He's also fast, so your Shotlocks are the best method of attack.
- 7
  Defeat the Iron Imprisoner to get your reward, the Ultima Cannon.

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