Quoted from Sprudeldudel:
Been stuck with everything finished in exactly that situation. Sucked massively. Lost two balls trying to start it and failed. Don't know how to trigger the white arrows in order to shoot for them...
Han is my solution as well. I start boba fett as the first thing on ball one and if I don't complete it on the first ball I don't even continue the game and restart.
If anyone can explain how to get those white arrows to light up I'd appreciate it a lot
You need to shoot Combo shots to light the white arrows.