Here are some cheats and tips for the game Silent Scope 3.
Real-time window option:
Complete the indoor shooting range with a “S” or better rank to unlock the
“Real-time Window” option at the “EX Options” menu.
Professional mode:
Successfully complete all EX missions to unlock the “Professional Mode” option
at the “EX Options” menu.
Continuous mission mode:
Successfully complete all EX missions to unlock the “Continuous Mission Mode”
option at the “EX Options” menu.