Perfect Rescue Achievement
Finish the Rescue Chapter in one go.
These two achievements are the hardest in the game. They are what make the game a 9/10 difficulty. You must complete each chapter of Story Mode from start to finish without dying. There is no easy way to do these. You need to just keep playing the levels over and over again until you have them to some degree memorized. Feel free to use Practice Mode to practice Run Chapter, as in that mode there is no Chaser following you. There is no Practice Mode for Rescue Chapter, however.