Each world has a set of 3 Missions that can be attempted after clearing that route once.  Completing these Missions rewards you with new, rare Gummi Blocks & Blueprints.  A complete list of Gummi Missions, organized by world, is provided below. Completing them all awards you with the Bahamut Model Blueprint and a Crown-G Gummi Block.

Traverse Town

Mission 1

Objective: Score more than 80 points
Difficulty: 1
Reward: Wheel-G (x1)

Mission 2

Objective: Start from Olympus Coliseum and collect more than 30 barrier items
Difficulty: 2
Reward: Fang-G (x1)

Mission 3

Objective: Start from Hollow Bastion, score 0 points, and arrive without taking damage. Use of Shield-G or Shield2-G is prohibited.
Difficulty: 5
Reward: Moogle Model (x1)


Wonderland

Mission 1

Objective: Score more than 120 points
Difficulty: 1
Reward: Wheel-G (x1)

Mission 2

Objective: Use Haste-G or Haste2-G more than 5 times, and arrive without taking damage.
Difficulty: 2
Reward: Fang-G (x1)

Mission 3

Objective: Start from Traverse Town, and collect more than 40 Gummi Blocks.
Difficulty: 3
Reward: Valefor Model (x1)


Olympus Coliseum

Mission 1

Objective: Score more than 180 points
Difficulty: 1
Reward: Fang-G (x1)

Mission 2

Objective: Start from Deep Jungle, and destroy more than 70 ships. Only weapon allowed is Thundara-G
Difficulty: 3
Reward: Horn-G (x1)

Mission 3

Objective: Start from Traverse Town and destroy all obstacles.
Difficulty: 4
Reward: Pupu Model (x1)


Deep Jungle

Mission 1

Objective: Score more than 200 points
Difficulty: 1
Reward: Wheel-G (x1)

Mission 2

Objective: Start from Agrabah and collect more than 10 Special items
Difficulty: 2
Reward: Fang-G (x1)

Mission 3

Objective: Start from Wonderland and destroy more than 55 ships. Only weapon allowed is Thundaga-G.
Difficulty: 3
Reward: Cerberus Model (x1)


Agrabah

Mission 1

Objective: Score more than 330 points
Difficulty: 1
Reward: Wheel-G (x1)

Mission 2

Objective: Start from Wonderland and destroy more than 130 ships. Only weapon allowed is Comet-G.
Difficulty: 3
Reward: Horn-G (x1)

Mission 3

Objective: Collect more than 130 Gummi Blocks. Use of Drain-G or Osmose-G is prohibited.
Difficulty: 4
Reward: Tonberry Model (x1)


Halloween Town

Mission 1

Objective: Collect more than 20 Energy items
Difficulty: 3
Reward: Wheel-G (x1)

Mission 2

Objective: Destroy 220 ships without using the brakes
Difficulty: 3
Reward: Caterpillar-G (x4)

Mission 3

Objective: Start from Neverland and score more than 550 points. Only weapon allowed is Meteor-G.
Difficulty: 4
Reward: Ixion Model (x1)


Atlantica

Mission 1

Objective: Collect more than 10 Shield items
Difficulty: 2
Reward: Wheel-G (x1)

Mission 2

Objective: Score more than 240 point without destroying any obstacles
Difficulty: 4
Reward: Caterpillar-G (x6)

Mission 3

Objective: Score more than 260 points, but do not collect any items
Difficulty: 5
Reward: Pandaemonium Model (x1)


Neverland

Mission 1

Objective: Start from Atlantica and destroy more than 150 ships. Only weapon allowed is Thunder-G.
Difficulty: 3
Reward: Rock-G (x1)

Mission 2

Objective: Start from Olympus Coliseum, use a ship with at least 100 Gummi Blocks in it, and arrive with no damage.
Difficulty: 4
Reward: Drill-G (x1)

Mission 3

Objective: Start from Olympus Coliseum, use a ship with 10 Gummi Blocks or less, and destroy 777 obstacles.
Difficulty: 5
Reward: Gilgamesh Model (x1)


Hollow Bastion

Mission 1

Objective: Start from Neverland and destroy more than 130 ships. Only weapon allowed is Ultima-G.
Difficulty: 4
Reward: Rock-G (x1)

Mission 2

Objective: Score more than 1600 points
Difficulty: 5
Reward: Angel-G (x2)

Mission 3

Objective: Use Haste2-G 10 times and arrive without taking damage. Use of Shield-G or Shield2-G is prohibited.
Difficulty: 5
Reward: Phoenix Model (x1)


End of the World

Mission 1

Objective: Use a ship with 2 Gummi Blocks or less, don’t use the brake, and arrive without taking damage
Difficulty: 5
Reward: Shoes-G (x2)

Mission 2

Objective: Use a ship with 5 Gummi Blocks or less and score more than 350 points
Difficulty: 5
Reward: Dark-G (x2)

Mission 3

Objective: Score more than 600 points
Difficulty: 5
Reward: Eden Model (x1)