Silent Scope Complete Cheats

Completion bonuses:
Finish any game in the series to unlock various bonus options.
User Cheat by Sniper

Continuous mission mode:
Finish all EX missions to unlock continuous mission mode. You will only have one life to play all the missions.

Professional mode:
Finish all EX missions to unlock professional mode. There will be no crosshairs displayed.
User Cheat by Arcader

Alternate ending sequence:
Finish the game in continuous mission mode.

Easier shots:
Go to the "Setting" menu, then "Scope Setting/Size" Adjust the scope size to 100. This makes everything slightly easier to shoot.