Return to your first kill location and ready the M16 A2. Go into the small building for an M16 A2 and some ammo, then into the warehouse to get a variety of explosives and grenades. There are 2 more guys near the SAM, so pick them both off as quickly as you can. Keep using your Mp5 to stay quiet, and pick up a guy patrolling the other side of the building.

Take his AK47 then go straight around behind a small building. Crawl towards the guy patrolling near the warehouse and shoot him, then go around the back of the warehouse and kill another lone gunner. Get your Mp5 ready and head to the right immediately (down the slope). Keep left and push the button to open the gate. Now wait for a guy to walk past in the next area and shoot him with the Dragunov. Spot a camera above and to the right that you can take out. Slide down the ladder and turn left, then head around the crates until you find a fence to climb over. Go back down and deactivate the cameras again, then climb up the tower and slide across to the far tower using the overhead cable. Pick off the 5 enemies using this sniper rifle (1 in another tower, 1 in a post and 3 patrolling to the left). Climb the ladder, then walk around to the right - stab the guy and take his Dragunov.

Leave the building, and head left to the water tower. Enter through the door to the left and use a computer to disable the security cameras for 2 minutes. Take their AK47's then go through the other door. Stab the next guy as he enters the doorway. Ready your glock and shoot him in the head, then step back and quickly switch to your knife. Take the uzi and ammo, then open the door. Turn right and climb the ladder, then walk along the roof and climb down into the building.

Project igi mission 4 walkthrough