Time Dilation
Longer is shorter when all is said and done.
Pass a map that is 10 minutes or longer with DT mod (check map time AFTER you put DT on).
Yoko Ishida - paraparaMAX I easy but long
Lucky Star no Minna - Kumikyoku 'Lucky Star Douga' medium
Lucky Star no Minna - Kumikyoku 'Lucky Star Douga' hard but short