IGI (1) Mission (7): Border Crossing. Secret way to bypass the final gate.

What's really interesting about (I.G.I-1) is that there are many ways to complete a mission once you have understood the principles of its design . This is one way of passing this difficult level; though not the fastest, it has the following advantages: 1- Avoiding the last alarm that alerts the final chopper which can kill you just as you reach the final gate before the truck. 2- Showing you all the places of dangerous snipers and alarms. 3- Exploring some secret places like reaching the final chopper and bypassing the final gate to reach the truck from in front. 4- The places all medical syringes are shown.