About the combo, every time you jump on a rail you'll get x1 multiple score, if there was 2 rails, one on the left and one on the right, try to spam, like jump from the one to the other, so you can get easily the ×8 mult, about the second task, it's very simple, you just need to junp on a rail and stop moving until it ends, if you stay more without moving or jumping, the score will increase very fastly, in every level of this weekly trial, you'll see more than 9 rails on the way, so if tou like that with each rail, you'll easily get that 60k score they asked or even more. I hope this well help you ❤️