Use the market to buy time-extending modifiers (like +30 or +60 seconds) to make high-tier achievements easier to obtain.
Your primary goal is to examine each "client" for specific features that dictate their destination: Peace, Death!
To get the highest rating, you must be fast. Replaying days to earn "extra skulls" (sending a soul without clicking on them first) can help achieve an A+. Use the market to buy time-extending modifiers (like
Watch these walkthroughs and gameplay clips to see high-level sorting strategies in action: Peace, Death!