Pokemon Ranger: Shadows of Almia Cheats on DS

Capture Arena

Successfully complete the main storyline. You can now ride Wailord from Haruba Village to reach the Capture Arena.

Fight Darkri again

After completing the game, go back to the top of Alturi tower. At the top, there is a man. Speak to him and you can fight Darkri again. However, once you have fought him you will lose all your Pokemon.

All the bosses (including ranger net)

Mr. Kincaid :Drapion
Ice:Froslass
Gem guardian Lucario
Gem guardian Heatran
Mr. Kincaid:Gliscor
Gem guardian Cresseila
Heath:Magnezone
Heath:Elictivire
Heath:Rhyperior
Lavana:Magmortar
Ice:Gallade
Heath/Lavana/Ice:Gallade/Rhyperior/Magmortar
Blake Hall (A.K.A team dim suns boss):Darkrai
Ranger Net
Riolu
Darkrai

Lumineon

On Quest 11, where you have to find Lumineon, it will be in the same place that you had to chase Sharpedo to get the key in Mission 5 "Recover a key from Sharpedo".

Extra missions

Connect to wifi and search for new missions on wifi connection. You can then download Recover The Manaphy Egg, Rescue Riolu, and Liberate the tower.