User blog:TenchiMuyoFan97/Any tips to beat timed mode high scores in Sonic Runners?

For some reason, as for story mode, I couldn't seem to get myself to the top 25 since I'm now have the one star S ranking, and as for timed mode, I'm at 20th place, but I really want to stay up to top 20 before my rank goes low. Does anyone have any advice on helping me with that, such as useful characters and/or buddies that can work for it or stuff like that?