IQ Points is how your progress is measured in Suspects. Depending on your performance in Classic Mode matches, these can go up or down.

Guests
The following increases your IQ Points:
  1. Winning the match 
  2. Completing your assigned tasks *
  3. Voting for the Killer (even if the Killer is not evicted) *
Killers
The following increases your IQ Points:
  1. Winning the match
  2. Killing guests *
  3. Sabotaging the other players (triggering bombs, disabling lights) *
Regardless if you are a Guest or a Killer, the following decreases your IQ Points:
  1. Losing the match
  2. Leaving a match before it ends
*These are Bonus Points and can be earned only until a certain amount of IQ points has been reached.

After a match, you’ll be given a summary of your performance in that match. The number of points earned can vary depending on the number of times you did the actions above (complete task, vote for the correct killer, etc.).