[Berserker]

Make a grind on the rail then jump to the other one( on the opposite side), make sure you do a kickflip when you jump in order to slug a jock when you happen to pass one. Time your jumps in order to get the jocks and finish with a manual and some timed kickflips in order to hit the last few . It's quit difficult but it's all in the timing and make sure everytime you jump( or pass a jock) you do a trick otherwise they'll suckerpunch you.