You start off at a small square. A couple of enemy soldiers should already be visible on your tactical map (#1). There's a large distance separating you from each other, so you don't have to worry about them too much. Start moving towards the first checkpoint. I would recommend that you stick close to the upper part of the map. You should also pick larger areas instead of narrow alleys (#2). I guess I don't have to remind you to use the drone all the time.
There are more targets in front of you (#1). Use the drone wisely in order to find all of your opponents. I would recommend that you stand by a wall or a large object. Lean out carefully and try to kill the first group of enemy soldiers (#2). Make sure that no one's coming to your direction. You can't let the terrorists surprise you, because that would be equal to an instant death.
There's an enemy sniper on your left. You might as well ignore him. He shouldn't be able to harm you, but just to make sure start running (instead of walking) towards a nearby cover. There's a second sniper for you to deal with (#1). He is currently occupying a higher ground, so you might have some problems killing him. Keep moving towards your destination. Be careful, though. One of the nearby streets is going to be guarded by at least two terrorists (#2).
The best way to eliminate both terrorists would be to lean out carefully (#1). Take out the first soldier and after a few seconds get rid of the second one. You will also have to make sure that none of the enemy soldiers actually gets close to your position. You may ignore the armored vehicle. It won't be able to harm you in any way. Be careful. There's a third sniper in this area (#2). You probably won't notice him at first glance. It's very important that you kill him quickly.
Start moving towards some large warehouse buildings (#1). You MUST be very careful. A terrorist will probably be hiding inside one of them. It's very important that you kill him quickly. Sadly, you won't know exactly where he is standing, mostly because the drone isn't capable of doing that. Head on to the opposite end of the large warehouse. Use the drone to scan your surroundings (#2). The drone will come up with a few hits.
You shouldn't have any problems with the terrorists, especially since none of them are actually hiding. You will have to be standing by a small entrance. Start off by leaning out. You should be able to get rid of most of them that way (#1). Be careful. There's a sniper on your right (#2). You probably wouldn't even notice him. He has to die. Otherwise he would have been a serious threat to your safety.
You will have to reach the second warehouse building. It's located near the freeway. You've got to be very careful. There's probably a single terrorist here (#1). He is well armed. He should also be facing your direction. As a result, you MUST kill him quickly, before he manages to fight back. Try searching for a small exit (#2). Get close to it. Wait here for a moment. Your current objective is going to be cancelled. You will receive some new orders in just a few seconds. CHECKPOINT 2.