Unlock the following special missions by performing the corresponding tasks:

SPECIAL MISSION - HOW TO UNLOCK
Special Mission 1 - Watch the tutorial video.
Special Mission 2 - Complete 4T or 6T Arcade mode (complete all three stages).
Special Mission 3 - Complete 40 4T or 6T Arcade mode songs.
Special Mission 4 - Complete 3.2T Arcade mode (complete all three stages).
Special Mission 5 - Complete 4.T Arcade mode (complete all three stages).
Special Mission 6 - Complete 6.2T Arcade mode (complete all three stages).
Special Mission 7 - Complete 40 3.2T Arcade mode songs.
Special Mission 8 - Complete 40 4.2T Arcade mode songs.
Special Mission 9 - Complete 40 6.2T Arcade mode songs.
Special Mission 10 - Play over 200 different song charts.
Special Mission 11 - Equip "Ghost", and complete a song.
Special Mission 12 - Complete 35 missions.
Special Mission 13 - Complete all 70 missions.
Special Mission 14 - Complete a song with 1% Death Effector.
Special Mission 15 - Complete 100 songs with 99.0% to 99.9% Judgment rate.
Special Mission 16 - Complete any song with 100% Judgment.
Special Mission 17 - Get a 15,000 Freestyle Combo.
Special Mission 18 - Get a 50,000 Freestyle Combo.
Special Mission 19 - Get a 100,000 Freestyle Combo.
Special Mission 20 - Get a 300,000 Freestyle Combo.
Special Mission 21 - Get a 500,000 Freestyle Combo.
Special Mission 22 - Get a 999,999 Freestyle Combo.
Special Mission 23 - Reach 150 Playcount.
Special Mission 24 - Reach 300 Playcount.
Special Mission 25 - Reach 500 Playcount.
Special Mission 26 - Reach 700 Playcount.
Special Mission 27 - Reach 1,000 Playcount.
Special Mission 28 - Have a Game Over five times.
Special Mission 29 - Reach DJ Level 50.
Special Mission 30 - Reach DJ Level 99.

-Unlock the following songs by performing the corresponding tasks in MX Series mode:

SONG - HOW TO UNLOCK
"Beautiful Girl MX" - Mission reward
"Break! MX" - Level 60 onwards random reward
"Cosmic Fantastic Love Song MX" - Mission reward
"Desperado (Nu Skool Breakz Mix) MX" - Mission reward
"Dream of Winds MX" - Level 90 onwards random reward
"Dream of Winds MX" - Level 90 onwards random reward
"Enemy Storm (Dark Jungle Mix) MX" - Level 90 onwards random reward
"Everything MX" - Level 50 onwards random reward
"Funky People MX" - Mission reward
"Get Out (Hip Noodle Mix) MX" - Mission reward
"Gone Astray" - Level 90 onwards random reward
"Hanz Up ! MX" - Level 70 onwards random reward
"Keys to The World MX" - Special Mission reward
"La campanella - Nu Rave MX" - Level 80 onwards random reward
"Leave Me Along MX" - Level 80 onwards random reward
"Luv flow (Funky House Mix) MX" - Special Mission reward
"Masai (Electro House Mix) MX" - Mission reward
"Mellow D MX" - Mission reward
"NB Ranger - NonStop Remix MX" - Mission reward
"Out Law - Reborn MX" - Level 80 onwards random reward
"Put Em Up MX" - Mission reward
"Rain Maker MX" - Level 60 onwards random reward
"Raise Me Up MX" - Mission reward
"Season (Warm Mix) MX" - Mission reward
"SuperSonic (Mr.Funky Remix) MX" - Level 70 onwards random reward
"Trip MX" - Level 70 onwards random reward
"Whiteblue MX" - Level 80 onwards random reward
"Xslasher MX" - Level 90 onwards random reward
"Zet (Mr.Funky Remix) MX" - Mission reward

-Unlock the following songs by reaching the corresponding levels:

SONG - LEVEL
"Break!" - Level 40 onwards random reward
"Dream of Winds" - Level 70 onwards random reward
"Drum Town" - Level 30 onwards random reward
"Enemy Storm (Dark Jungle Mix)" - Level 80 onwards random reward
"Gone Astray" - Level 70 onwards random reward
"Hanz Up!" - Level 50 onwards random reward
"La Campanella - Nu Rave" - Level 50 onwards random reward
"Leave Me Alone" - Level 60 onwards random reward
"Rage of Demon" - Level 80 onwards random reward
"Rain Maker" - Level 40 onwards random reward