you need to make sure that you have a lot of room this is essential to get a high score in this mini-game. one thing i noticed while playing is when more than one person starts hitting stuff at you they hit to where your avatar is standing, so what i did was start all the way on one side. as more objects kept coming i would run from left to right then back and forth. i also payed the closest attention to the first object that was hit, the rest can be seen in your peripheral, just make sure you keep running back and forth. let me know how this advice helps.