Perform the task in order to unlock the thing specified before.
Axe-hand Morgan Statue: Complete level 1-3
Billow-a-bike: Complete level 6-3
Cat's Claw: Complete level 3-3
Chakram: Complete level 3-2
Chouchou's dogfood: Complete level 2-2
Elephant Tuna: On level 6-1, have Sanji talk to a woman
Free Food: Complete level 4-2
Gas Mask: Complete level 4-3
Gum Gum Fruit: Complete level 2-3
Hatchan's Octopus Trap: Complete level 5-2
Lollipop: Complete level 4-3
Mackerel Head One: Complete level 4-1
Map of the grand line: Complete level 2-3
Master of the Near Sea: Complete level 5-2
Shigure: Complete level 6-2
Special Buggy Ball: Complete level 2-3
Straw Hat: Complete level 4-3
Tooth Gum: Complete level 5-3
Usopp's Sling shot: Complete level 3-3
Usopp's Sling shot: Complete level 3-3
Wado: Complete level 1-2
Zolo's Stomach Band: Complete level 1-3
Unlockable Flags
To get the flags you first need to beat the game than do the following.
Alvida pirate flag: Beat Alvida in 1-1 then find her in 6-1
Arlong's pirate flag: beat Arlong a second time around
Black cat pirate flag: Beat kuro the second time around
Buggy's pirate flag: Beat buggy the second time around
Cook pirate flag: get sanji and talk to Chef Zeff in 4-1
Kreig's armada: Beat Don Kreig the second time around
Navy flag: beat axe hand morgan or chaser the second time around
Red hair pirates flag: Beat boss battle mode in all difficulties
Straw hat pirates flag: get all the flags but the red hair pirates flag
Veggie pirate flag: it's behind the veggie pirates in 3-1,you have to have Ussop to get past them
Sound Test
To unlock the sound test in the options menu collect all the mini chests and then talk to gaimon in syrup village 2. (You must have completed the game and have the treasure key before you can pick them up)
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