Level select:
Successfully complete the game under the normal or
hard difficulty setting to unlock an option that will allow you
to pick any level in the game.


Hint: Grenades:
When on any level and there are two enemies talking
to each other, throw a grenade (for example at the beginning of
the Think Like A Gun level). They will not even look to see what
it was because they will be distracted.


Hint: Shooting enemies:
The best way to kill someone is to pull the trigger
when your crosshairs are red.



Hint: Shooting hidden enemies:
Some enemies hide in areas where you cannot shoot them.
Throw a grenade at them and they will jump out of hiding. When
they jump out, they will land on the ground on their stomachs.
They will require a few seconds to get back up. Before they do,
aim and shoot them or they will go back and hide again.