Not sure if it's a bug w/ the last update, but even with the setting of 'focuses on closest target', the tower sometimes shoots at further targets while being under attack (at close range).
I can't say for sure, but most players that get a 6/7 have missed the very first deduction, when Mitsk comes to your office for the first time. If you ask him why he's there, instead of deducing it yourself, you lose a point!
Hope that helps!
 "The Perfect Tower"){kind=icon}
 "Zombie Society - Dead Detective"){kind=icon}
 "Mine of Sight"){kind=icon}
 "BackDoor- Door 2"){kind=icon}
 "Carlos and the Dark Order Mystery"){kind=icon}
 "Midnight Cinema"){kind=icon}
 "Aztec's Totems"){kind=icon}
I can't say for sure, but most players that get a 6/7 have missed the very first deduction, when Mitsk comes to your office for the first time. If you ask him why he's there, instead of deducing it yourself, you lose a point! Hope that helps!