Крутой Сэм 2 чит-файл №1

Removing the 'Cheat' Status from a Saved Game
Once you have saved the game with activated cheat mode you also need to remove
the cheat status from the savegame. Go to:

.../Serious Sam 2/Content/SeriousSam2/PlayerProfiles/[Something]/SavedGames

and open the desired savegame with a text editor such as Notepad. Look for:

STAT_CHEAT="True"

and change this to:

STAT_CHEAT="False"

Save and start the game. The cheat status will now be deactivated with the
beginning of the next chapter.