this is a very effective way to get those kills up. IF you want headshots, i suggest getting the auto headshot thing. Anyways, get out some weps. with lots of ammo, like the C8 rifle or MDS A3. Get the most ammo from each type of wepon. Now, go to the first level (quarrantine zone). Kill everyone in the first area, but do not proceed with the mission, rather, go straight ahead from where you start to the little white tube. Go all the way in, and back out. Enemies should respawn. I strongly suggest getting the automatic headshot thing first, but it can still be done without it. I was able to rack up 1356 kills in just over an hour! hope that helps!
In level one you notice that one of your objectives is save CHA officers(yellow suit people). When you encounter one (in one area there are 2 CHA people)start shooting at enemies. Locking on (R1) makes this a heck of alot easier. Once you start shooting at enemies the CHA (in that particular area not all of them) will stop shooting you. Make sure you are precise with aiming if the CHA is/are close to you while helping them, get to close to shooting them and they'll start shooting you instead of the REAL enemy.
You can complete all of the online objectives (except 4) by using the jump glitch to reach places you would normally need a second player to reach. The First of the four unreachable objectives (which is the first mission) can be done by using a gameshark code (Infinite Health). The other three definately require online help. Those three are Mazyr, Belarus: Krivorozhstal Mill, Mazyr, Belarus: Belaya Vezha & Kiev, Ukraine: Chechen Terrorist Base. Everything else can be done by using the jump glitch. Basically roll & once your character's ass hits the ground press the X button. It isn't easy at first, but with practice it becomes easier.
You know the cover of the case, right under that plastic stuff? Take the cover out and you will see there is a pretty cool picture and 2 locations of secret weapons. Both of the weapons are in the Carthage Warehouse District.
Each time you earn a rank, you earn a new weapon.
GAWS 12 ga.:
Chief of Operations
Deputy Chief of Operations
Assistant Chief of Operations
Stavva M70 B1:
Intelligence Operation Commander
Investigative Operations Commander
Field Operations Commander
Intelligence Analyst Specialist
Investigative Analyst Specialist
Field Research Specialist
10mm Investigative Research Specialist
Field Analyst Specialist
Mark 23 SD:
Commander in Chief
This pretty much a glitch than a cheat. you can use this glitch at the first level you do this by the big trialer you usally need a teammate to get on it you don't have when you do the jump glitch. what you do is you roll as soon as your character's ass touches the ground you press the x botton then he should jump in the air but it take while to do it, if you get luky you can get it on the first time. takes alot of practis to do it, after you get on top you shoot the window and get the c4 then you go to the parking lot enterance right, by there is a locked gate you go up to it then plant the c4. your problay wondering why you want to do this because there is a faster way to the boss. this can work on online and offline.
Complete levels with some special conditions.
Agency Medal of Valor:
Get all Agency ratings, Special Agency ratings, all other medals, all commendations, and the highest rank.
Alima Karkadann's Unicorn Charm:
In the Ukraine mission, get Alima to safety.
Complete all objectives in the Yemin 1 and 2 missions.
If you get solo par times, for the common missions, you will unlock some bonus missions.
solo par for the 3 Cahrtage Missions
solo par for the 2 Belarus Missions
solo par for the Minisk Mission and the 2 Yemen.
solo Par for Tokyo, Lorelei, Myanmar, and Zurich Missions