Aim better with pistol: Press the X button to pull the gun out, then press Up on the D-pad to switch the normal crosshair to a laser sight. You can kill faster and more accurate (easier head shots).Find mines easily:Enable the thermal vision to find mines in the camp mission.Level Select:Finish the game in normal or hard mode. If you want to go back to the previously played levels, always usethe level select instead of checkpoints. You could lose all of your data.Easier aiming with sniper scope SC-20K:Click the Right thumb-stick to zoom, after press L trigger to hold your breath.General tips:Hide yourself:Eliminate as many light sources as possible. Conserve ammo:To save ammunition, use the pistol.Hide bodies:Always hide bodies. If you do not hide the bodies you will raise alarms or perhaps fail a mission. Eliminate surprise enemies:Use the fiber optic cable on the doors before opening them.OPSAT info:Check your OPSAT periodically for updates and other useful info. You will get clues also.