There's still room for improvements. Like challenge 8, 7, 9, 11 and potentially 3 can definitely be improved. I missed shots on challenges 9 which killed time, had some terrible Hill spawns on 11 and 7, 4 if you wanna include the 2 common fastest Hill spawns right next to each other, which I didn't get. Theres a faster Case spawn set for challenge 8. I decided to stick with the 2nd fastest spawn set though.