Hey guys, so I've been playing Quest mode on DDR Uni 3 (X360) version. Problem is, I'm stuck on 2 challenges.

Corvus street, it has the song Less than 3. The challenges are "Only step on quarter notes. Get a full combo of all the notes."

#2 is "Don't step on Down arrows: Score 80% great perfect or marvelous" 

#3 "Score 100% perfect or marvelouos: (All jump arrows)"

Problem is, I don't know exactly what quarter notes are and well, i've failed all 3 challenges several, several times.

The other is the Taurus street which has the song 30 lives with you (up up down down mix). The arrows are invisible and you must score a full combo on all arrows to pass the challenge.

Admittedly I'm not the best player at this. I have trouble on basic songs still so,challenge mode has really thrown me for a loop. Any tips that could help me out? I've heard some people mention playing it with a controller, but how does that make it easier? Thanks for the advice guys. These two challenges cause me to get so frustrated, I flat out stopped playing for months..