Castlevania: Portrait Of Ruin Codes -

Alternate dialogue:
Hold L and press A at the main menu. Jonathan will say "Showtime" to confirm correct code entry. This will toggle the dialogue between Japanese and English, depending on the game's original regional version. 

Completion bonuses:
Successfully complete the game with the best ending to unlock "Richter" and "Sisters" modes, Boss Rush Courses 2 and 3 at the "Boss Rush" menu, the hard difficulty setting, the "Sound Mode" option at the main menu, and the ability to replay the game by loading your cleared saved game file.

Successfully complete the game under the hard difficulty setting to unlock a permanent +50 Luck bonus.

Hidden Vincent dialogue:
Play as Charlotte and stand in front of Vincent the shopkeeper. Hold Up until he begins speaking.

Alternate credits:
Successfully complete the game under the hard difficulty setting to unlock an alternate portrait of Vincent during the ending credits.

Play as Old Axe Armor:
Kill at least 1,000 Old Axe Armors and save the game after completing it. Start a new game and you can now play as an Old Axe Armor.

Richter mode:
Defeat the Whip Memory and Dracula at the end of the game.

Sisters mode:
Defeat the Whip Memory and Dracula at the end of the game.

Birthday cake:
Set your birthday in the DS system settings to the current date. Then, go to Vincent the shopkeeper. A birthday cake that costs 3,000 will be offered for sale.

Magus Ring:
Successfully complete all of Wind's quests to get the Magus Ring. It regenerates your magic points quickly.

Boss Rush bonuses:
Complete the indicated Boss Rush course under the listed time to get the corresponding bonus.

Astral Ring: Boss Rush Course 1 in 1 minute. 
Illusion Fist: Boss Rush Course 2 in 5 minutes. 
Invisible Cape: Boss Rush Course 1 in 3 minutes. 
Record 1: Boss Rush Course 2 in 3 minutes. 
Record 2: Boss Rush Course 3 in 3 minutes. 
Scout Armor: Boss Rush Course 3 in 5 minutes. 

Hard mode bonuses:
Complete Hard mode with the indicated level cap to unlock the corresponding bonus.

Konami Man trophy and +50 Strength: Level 1 cap. 
Twin Bee trophy and +50 Intelligence: Level 25 cap. 
Vic Viper trophy and +50 Luck: Level 50 cap.