Many people seem to be getting very frustrated with this game. here's a critical tip i've taken from my time playing CoD zombies that also applies here: There is a maximum amount of enemies on the screen at once (20-25). you can use this to your advantage and create "death trains" by circling around the perimeter until they stop spawning and hitting them with an ultimate attack. it takes a while, but it makes the game much easier.
vertical speed challenges shouldn't be limited to the up direction. went up 70k+ feet, turned around and hit the boosters. maxed out speedometer in .2 seconds.
stupid dispensers won't stop pouring when i try to put them back. so i don't get the star because i get a 27% on the topping. this game was intentionally the last i played for the yo dawg quest because the mechanics of this series are frustrating.