Pirates of the Caribbean: At World's End Cheats - Xbox 360

Achievements
Complete the following tasks to unlock achievements and their alloted gamerscore:

Collect 100 Souls (150) - Collect one hundred souls from your enemies using the power of the Jackanism sword.
Davy Jones' Locker Treasure (25) - Open the Jackanism chest of Davy Jones' Locker, and unlock bonus material in the Treasure Trove.
Eleven Calypso Pieces (150) - Find the hidden Calypso piece on each level to unlock the story of Davy Jones and Calypso.
Elizabeth's fourth finish move (25) - Unlock Elizabeth's fourth finish move by exploring and escaping from Singapore.
Elizabeth's second finish move (25) - Unlock Elizabeth's second finish move by locating Mistress Ching and Villanueva in Tortuga.
Elizabeth's third finish move (25) - Unlock Elizabeth's third finish move by surviving Isla Cruces.
Isla Cruces Treasure (25) - Open the Jackanism chest in Isla Cruces, and unlock bonus material in the Treasure Trove.
Jack's fourth finish move (25) - Unlock Jack's fourth finish move by escaping from Davy Jones' Locker.
Jack's second finish move (25) - Unlock Jack's second finish move by escaping from the Prison Fortress.
Jack's third finish move (25) - Unlock Jack's third finish move by surviving the Kraken's attack.
Port Royal Treasure (25) - Open the Jackanism chest in Port Royal, and unlock bonus material in the Treasure Trove.
Prison Fortress Treasure (25) - Open the Jackanism chest in the Prison Fortress, and unlock bonus material in the Treasure Trove.
Seven Bottles of Rum (25) - Collect the seven bottles of Rum (hidden in the Black Pearl) - during the Kraken's attack.
Seven Gold Bars (25) - Collect the seven gold bars of Shipwreck City.
Seven Letters (25) - Collect all seven Letters, lost throughout the Prison Fortress.
Seven Nautilus Shells (25) - Collect the seven Nautilus shells, scattered throughout the Flying Dutchman.
Seven Paprika Tins (25) - Collect the seven Paprika tins of Isla Cruces.
Seven Periwigs (25) - Collect the seven Periwigs hidden around Port Royal.
Seven Pirate Flags (25) - Collect the seven Pirate Flags of Tortuga, hidden in chests and secret areas.
Seven Pirate's Dice (25) - Collect the seven Pirate's dice, lost around the Flying Dutchman and the Black Pearl.
Seven Sea Charts (25) - Collect the seven Sea Charts from the streets of Singapore.
Seven Skulls (25) - Collect the seven Skulls hidden throughout Davy Jones' Locker.
Seven Tarot Cards (25) - Collect the seven Tarot cards lost around the Flying Dutchman.
Shipwreck City Treasure (25) - Open the Jackanism chest in Shipwreck City, and unlock bonus material in the Treasure Trove.
The Kraken Treasure (25) - Open the Jackanism chest in the Black Pearl, and unlock bonus material in the Treasure Trove.
The Maelstrom Treasure (25) - Open the Jackanism chest of the Maelstrom, and unlock bonus material in the Treasure Trove.
Tortuga Treasure (25) - Open the Jackanism chest of Tortuga, and unlock bonus material in the Treasure Trove.
Will's fourth finish move (25) - Unlock Will's fourth finish move by surviving Isla Cruces.
Will's second finish move (25) - Unlock Will's second finish move by saving Chevalle and leaving Port Royal.
Will's third finish move (25) - Unlock Will's third finish move by stealing the key from the Flying Dutchman.

Isla Cruces level: Gold Idol location
When you get to the waterfall where enemies attack you, defeat them all. Then, walk into the waterfall. Behind the waterfall is a secret room with the gold idol.

Unlock Swords
The following swords are listed by order of strength. Complete the indicated task to unlock the corresponding sword:

Cutlass - Default sword.
Dutchman sword - Complete the Pearl Vs Dutchman level.
Norrington sword - Complete the Isla Cruces level.
Bone sword - Complete the Davy Jones' Locker level.
Gun sword - Complete the Sea Battle level.
Pirate King's sword - Complete the Shipwreck City level.
Davy Jones' sword - Complete the Maelstrom level.
Ghost sword - Complete the Hit Combo sub-mission on the Isla Cruces level.
Legend sword - Complete the Hit Combo sub-mission on the Maelstrom level.