Dance Dance Revolution Extreme (PS2)

IIDX Boss Oni course
Complete V (for EXTREME) challenge with an "A" or greater rank.


Ultra 16 Oni course
Complete the Legend Road Oni course.


Dancer options
Play any course in Nonstop mode.


Credits option
Complete One More Extra Stage; every Nonstop course; or the Paranoia Brothers Oni course.


The Legend Of MAX
Pass The Legend Of MAX as your extra stage.


Tomorrow Perfume
Get an "AA" rank or greater.


Trip Machine survivor
Get an "A" or better rank on Trip Machine Survivor under Heavy mode as as semi-final stage.


Try 2 Luv. U
Get twenty "A" or greater ranks (except in beginner mode). Alternately, complete Lesson mode.


Rap 5 Oni course:
Get an "A" or greater rank on Daikenkai challenge.


Paranoia Survivor
Complete Paranoia Brothers Oni course. Alternately, complete any of the songs in the course under Heavy mode.


Xenon
Get an "A" or greater rank on V (for Extreme) challenge.


Rebellion of Oni (Oni course)
Master Light, Standard, or Heavy mode.


Remix Nonstop course
Complete the Standard Nonstop course.


RevenG and TaQ Oni course
Complete five Oni courses.


From GF & DM Oni course
Receive an "A" or better on Mikenko Rock in Heavy mode.


Reverse Oni course
Complete any song in Reverse mode.


Road of 2MB Oni course
Complete MAX. (period) as your extra stage.


Slow Road of Oni (Oni course)
Get an "A" or greater rank in bag heavy mode.


True Demon Road Oni course
Complete 20 Oni courses.


Un Deux Trois
Get fifty "A" or greater ranks (except in beginner mode).


2MB (Dancer)
Play MAX.(period) with player one.


Max Quartet Nonstop course:
Pass MAX. (period) as your EXTRA STAGE.


Legendary Road Oni Course
Play every Max song. Max songs do not have to be beaten; just played.


U1 (dancer)
Play MAX. (period) as player two.


Angel's Oni course
Complete ten Oni courses.


Brand New Songs Oni course
Complete the Brand New Songs Nonstop course.


Brand New Songs Nonstop course
Complete A Stupid Barber.


Darkness Oni course
Complete any song with the "dark" setting.


Additional Dancers option
Complete every Nonstop course.


Endless mode
Get 100 "A" or greater ranks (except in beginner mode)


Legend Road Oni course
Pass True Demon Road Oni course.


A Stupid Barber
Complete the Funky Groove Nonstop course. Alternately, successfully complete Lesson mode.


Burnin' The Floor (Momo Mix)
Complete the Naoki Neo-Standard Nonstop course.


Dance Dance Revolution
Play every song, then play about another twenty songs. You will then see it on your song list.


Emi (2) (4th) (dancer)
Complete fifteen songs with Emi (1) (4th) as a dancer.


Keep On Liftin'
Pass every Nonstop course.


Naoki Premium
Complete the Naoki Neo-Standard Nonstop course.


PARANOIA Survivor Max
Get an "AA" or greater rank in all songs in the Paranoia Brothers course under Heavy mode.


Paranoia Survivor MAX
Get an "AA" rank on every song in the Paranoia Bros. Max 2 Oni course. Note: Sometimes you might see it on your song list, but you cannot play it on challenge. You will only see it a few times.


From IIDX Oni course
Complete one Oni course.