When you get the tape, they give you 5 challenges, the first 4 are easy but the last one is tricky it took me months to figure out the way to beat this challenges,
what you have to do is that when you enter
dokeganza hill hit the left trigger so that
you can see the avenue leading to shibuya terminal, skate ahead you should come to a rail in the of the street dividing the two lanes, but you'll have to go to the rail on your left, on the side where the graffiti stop is and where the road that leads to the rest of dokeganza hill are also, jump onto the rails and keep grinding until you reach the place where the road that leads to the statue that poison jam stole, if you reach the end of a rail jump to the next one (make sure you dont fall, this is just like combo's challenge), so jump to the rails in the road sometime after or before you land on those rails. this beats the challenge (avenue long grind).
This here is another difficult one, this should beat ( "name of gates" grind.)
the very last one. this is another but simple challenge, what you have to do not
( like i have done vainly) try to jump on top of those gates that are around of the dragon tower and grind but grind the most inner circle of rails that surround it, once you make a lap the soul appears.