Attack of the Dragon – Nintendo DS

Attack of the Dragon - Platform: Nintendo DS

Music player:
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Successfully complete the game to unlock the music player. 

Art gallery:
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Successfully complete the indicated task in the corresponding game 
to unlock the art gallery for that title:

1941: Defeat the Krote, the level 4 Boss 
Avengers: Successfully complete level 4 and rescue the girl 
Bionic Commando: Get over 25,000 points 
Black Tiger: Defeat the level 3 Boss 
Block Block: Successfully complete an extended bonus 
Captain Commando: Defeat Dr. T.W., the level 5 Boss 
Final Fight: Pick up Eddie E's Bubble Gum 
Forgotten Worlds: Successfully complete three stages 
Last Duel: Get over 100,000 points 
Legendary Wings: Find a "Lucky!" hidden area 
Magic Sword: Reach level 20 of the tower 
Mega Twins: Enter the Monster Castle 
Quiz & Dragons: Get over 200,000 points 
Section Z: Successfully complete Section E 
Side Arms: Defeat the level 3 Boss 
Street Fighter: Reach Thailand 
Strider: Defeat Captain Beard Jr. in level 3 
The Speed Rumbler: Successfully complete level 3 (Stone Hill) 
Three Wonders: Finish one the games 
Varth: Defeat the Steel Golem in level 15. 

In-game hints:
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Successfully complete the indicated task in the corresponding game to 
unlock the in-game hints for that title:

1941: Get over 500,000 points 
Avengers: Get over 20,000 points 
Bionic Commando: Successfully complete level 1 
Black Tiger: Get over 25,000 points 
Block Block: Successfully complete the beginner course 
Captain Commando: Get over 30,000 points 
Final Fight: Play as all three characters 
Forgotten Worlds: Get over 15,000 points 
Last Duel: Get over 50,000 points 
Legendary Wings: Get over 30,000 points 
Magic Sword: Get over 120,000 points 
Mega Twins: Get over 15,000 points 
Quiz & Dragons: Enter the Flatfield from level 2 
Section Z: Get over 70,000 points 
Side Arms: Get over 200,000 points 
Street Fighter: Get over 60,000 points 
Strider: Get the Terapodal Robopanther 
The Speed Rumbler: Get over 20,000 points 
Three Wonders: Play all three games 
Varth: Get over 250,000 points