(adsbygoogle = window.adsbygoogle || []).push({}); These are all the challenges, copy pasted from this link: You must login or register to view this content.
I added the "tips to complete them" part by myself, so don't say its copied from some other site, because its not.
If you want to add this to another site, tell me which site & why, and you MUST give me atleast some credit for it.
I didn't include the Killstreak, Finishing Moves, Operations, Payback, Equipment or Perk challenges, because they are pretty straightforward.


TIPS[/I][/U]


BASIC TRAINING TIPS


GHILLIE IN THE MIST
-Use a sniper rifle more often, aim for chest and above.
-Use stopping power & FMJ bullets (If unlocked).
CROUCH SHOT
-Not too hard, crouch when you shoot, and get 30 kills while doing it.
PRONE SHOT
-Drop shot with assault rifles.
-Snipe while prone.
POINT GUARD
-Injure people, and run away, its preferable that they're in last stand or final stand when you run away.
-Try in Ground War.
X-RAY VISION
-Shoot through thin surfaces such as flower pots, paper thin walls and through windows
-Use FMJ, not a necessity, but useful.
BACKDRAFT
-You can either do it the easy way, or wait it out til you get Sitrep.
-Sitrep: Look for any red dots, and shoot through the surface or go around.
-Without Sitrep; Look for flares of enemies Tactical Insertions, and destroy them.
-Throw near a sniper, and it'll kill the sniper and their claymore / C4
GOODBYE
-Cliff on Afghan, jump off
BASE JUMP
-Cliff on Afghan, land on matresses.
FLYSWATTER
-Wait til Lvl 30 and unlock Stinger, and shoot down a Chopper Gunner with Cold Blooded on.
VANDALISM
-If somebody takes cover behind a car, throw a Semtex / Frag.


INTIMIDATION CHALLENGES


OMNICIDE
-Use a 11 killstreak reward, such as Chopper Gunner or AC130.
-Get a nuke.
WARGASM
-Use a 3-4-5 Killstreak.
-Use a 5-6-7, and get a double with a Predator Missile.
THE BIGGER THEY ARE
-Cage match.
THE HARDER THEY FALL
-Cage match.
CRAB MEAT
-AC130
-Chopper Gunner
ULTIMATE SACRIFICE
-Do in a domination game.
-Don't cap any flags, do anything to help yourself lose, but get plenty of kills.
THE DENIER
-Cage Match, let them get 10 kills, then kill them, and win the match
-Win the match so you don't decrease K/D
CARPET BOMB
-Ground War, preferably a smaller map
RED CARPET
-Ground War, preferably a smaller map
GRIM REAPER
-Theres a glitch where you can use more than one Predator Missile, so just gather 4 or 5 and use them, and you'll easily get the challenge.
NO SECRETS
-Get a UAV, die. Get a UAV, die. Get a UAV.
SUNBLOCK
-Get a Counter-UAV, die. Get a Counter-UAV, die. Get a Counter-UAV.
AFTERBURNER
-Get a harrier, die. Get a harrier
AIR SUPERIORITY
-Get a harrier, die. Get a harrier
MG MASTER
-Man the turret on Karachi, preferably in Ground War
SLASHER
-Use a tactical knife, marathon, lightweight & commando.


PRECISION


ASSAULT EXPERT
-Get headshots with an AR, be accurate, its not too hard.
SMG EXPERT
-Get headshots with an SMG, be accurate, its not too hard.
LMG EXPERT
-Get headshots with an LMG, aim for the chest and the recoil will get you a headshot.
THE SURGICAL
-Don't reload after shooting, and be accurate
MACH 5
-Don't reload after shooting, and be accurate
DICTATOR
-Don't reload after shooting, and be accurate
PERFECTIONIST
-Don't reload after shooting, and be accurate
MULTI-RPG
-Play HQ, once the HQ is captured, use Danger Close and shoot an RPG into the HQ
CLAYMORE
-Placement is key, so is luck
MULTI-FRAG
-Use danger close, placement is key.
C4
-Place it on a flag in ground war, once you see you are losing the flag, click reload X2
COLLATERAL
-Prefire on Highrise with FMJ & Stopping Power
FLAWLESS
-Hide in tall grass in the corner all game, or play VERY defensively.
FEARLESS
-Use a Tac Knife, get into the enemy spawn.
GROUP HUG
-Throw a semtex into the enemy spawn.
NBK
-Snipe, use a silencer and aim for the head.
ALL PRO
-Prefire on Highrise with FMJ && Stopping Power, aim high.
AIRBORNE
-Theres a glitch on Derail, where you land inbetween a car and a wall, get a 2 killstreak while between them.


HUMILIATION


HOT POTATO
-Be quick, and throw to somebody who is close to you, not far away.
-You can throw you own grenade, it doesn't have to be a foes grenade.
-Throw you grenade on the ground and quickly run till you can throw it again, it counts towards the challenges progress.
CAR BOMB
-Plant C4's on cars, and detonate as people walk by, be sure to have UAV and a good hiding place.
BACKSTABBER
-Knife someone in the back.
SLOW BUT SURE
-Stun yourself, then kill someone
MISERY LOVES COMPANY
-While somebody is oblivious to you, sneak up behind them and hold onto a Frag until it explodes, works best on snipers.
OUCH
-While somebody is oblivious to you, sneak up behind them and aim the noobtube right at them.
RIVAL
-Do in Cage Match
CRUELTY
-Do in Cage Match
THINK FAST FRAG
-Kill someone in Final Stand with a Frag
THINK FAST STUN
-Kill someone in Final Stand with a Stun
THINK FAST FLASH
-Kill someone in Final Stand with a Flash
RETURN TO SENDER
-Lure someone towards there own Claymore, then kill them.
BLINDFIRE
-Flash yourself and kill somebody while you behind them.
HARD LANDING
-Snipe at the top of the cliff on Afghan
EXTREME CRUELTY
-Refer to "TANGO DOWN"
TANGO DOWN
-3rd Person Team Tactical, be stealthy and kill everyone on the team.
COUNTER MVP
-Get in a lobby, preferably with less skilled people, and just kill the top player 10 times.
-No, im not selling anymore.
But you can pay 20K for the HS I gave you.It also helps if you have a Chopper Gunner, or AC130, because it racks up alot of kills, and chances are it'll be the MVP on the other team.


ELITE


MASTER CHEF
-Pretty straightforward, use Danger Close.
COUNTER CLAYMORE
-Plant a Claymore behind someone, then shoot it quickly.
COUNTER C4
-Refer to Counter Claymore.
THE BRINK
-Best in ground war, run into a spawn and get a quick 3 kills, preferably with an explosive && danger close.
FAST SWAP
-Swap while they're in final stand
STAR PLAYER
-Get 5 kills, 1 death, then hide.
HOW THE ?
-Use Sitrep and FMJ.
DOMINOS
-Plant a C4, use OMA, then plant a Claymore, then let someone walk near them.
INVINCIBLE
-Run into the enemy spawn, then ditch.
SURVIVALIST
-In a cage match, hide the whole time.
ENEMY OF THE STATE
-Get a clutch in S&, play defensively, use UAV, and a silenced weapon.
THE RESOURCEFUL
-If you see someone running into a HQ, stick them with a Semtex.
THE SURVIVOR
-Empty all your ammo, then knife someone.
BOTH BARRELS
-Pretty easy && straightforward, your timing just has to be right.


RIOT SHIELD


SPONGE
-Get infront of a Sentry Gun, and don't move
BULLETPROOF
-Get infront of a Sentry Gun, and don't move
UNBREAKABLE
-Use Blast Shield
SHIELD VETERAN
-Use commando pro
SMASHER
-Marathon, Lightweight, Commando.
BACKSMASHER
-Sneak up on someone, and bash there heads in.

HIDDEN CHALLENGES

[/SIZE][/CENTER]
6fears7 Select killstreak rewards requiring 7, 8 and 9 kills and earn them all.
All Rounder Complete all other challenges
Click Click Boom Kill an enemy with C4 while you are in Last Stand
Hard to Kill Get 2 kills while in Last Stand or Final Stand
Heroic Capture a domination point while in Last Stand
Hijacker I Steal 10 enemy crates
Hijacker II Steal 50 enemy crates
Hijacker III Steal 200 enemy crates
Infected Get knifed by an enemy wearing this title.
Living Dead Survive in Final Stand long enough to get back up
Martydoh! Kill an enemy who is cooking a grenade
Martyr Get a kill with Martyrdom grenade.
Never Forget Get hurt by an enemy, survive and backstab the same enemy
Ninja Defuse a bomb right after it is planted while the planter is still alive. Search and Destroy, Sabotage, and Demolition Only
Radiation Sickness Get nuked by the enemy.
Renaissance Man Kill 3 enemies with 3 different weapons in a single life.
Sidekick Three kills with your secondary weapon in one life.
STD Knife someone wearing this title.
The Avenger Avenge the death of 3 teammates in one life
The Edge I Get the Game-Winning Killcam 5 times
The Edge II Get the Game-Winning Killcam 10 times
The Edge III Get the Game-Winning Killcam 20 times
The Loner Get a 10 kill streak with no killstreak rewards selected
Totally Numb Take enough damage that would normally kill you with Painkiller active
...With A Vengance Avenge a fallen teammate.
Credit to CallOfDutyWiki for the hidden challenges.

HOT POTATO
-Be quick, and throw to somebody who is close to you, not far away.

You can also throw you own dosnt have to be an enemies gernade thats been thrown at you.

just throw your G on the grownd and quickly run till you can throw it again counts towards this

You also need to get the hidden challenges in there

ok thanks man

Alright, i'll add that tip.
I'll get the hidden challenges soon, thanks for reminding
Thank & +Rep if you liked

No problem

COUNTER CLAYMORE
-Plant a Claymore behind someone, then shoot it quickly.
COUNTER C4
-Refer to Counter Claymore.

The way i done this was plant a Clay/C4 somewhere and wait for someone to run past and then shoot it and they die this is easier than trying to plant a Clay/C4 next to someone then quickly shoot it because they will have either moved and died if they have from a Clay or they turn round and shoot you in the face

THE SURGICAL
-Don't reload after shooting, and be accurate
MACH 5
-Don't reload after shooting, and be accurate
DICTATOR
-Don't reload after shooting, and be accurate
PERFECTIONIST
-Don't reload after shooting, and be accurate

I cant remember which one is for which gun but the sniper one is really easy the asualt isnt to hard but i cant get the LMG or SMG the LMG i find kill people to quick and has WAY to many bullets even when using the AUG and the SMG's spray all over the place to much if anyone knows of a easy way of doing the SMG and LMG please let me know

I have all of them done, they weren't too hard at all.
And waiting for people to run by the claymore ? By then they have already tripped it and yer screwed, unless you plant it out in the open and they shoot it themselves, its alot easier to do it my way.

lol you plant it so they wont trip it but you can still shoot it C4 is simple doing it this way i got both them in a couple matches

What SMG and LMG guns did you use because im not finding it that easy like i said the SMG just seems to spray all over the place and the LMG's have to many bullets....

and i thanked you on the post

Yeeaah, C4 is one of the easiest challenges IMO.
LMG & SMG, single fire, don't relload. If you miss, reload and start over
I used AUG HBAR & UMP45, but I thiink Vector would be gd too.

yeah i would of used the AUG and the UMP or Vector would of been my choice for SMG but thanks

I just read that you can shoot airstrikes called in by the enemy e.g. Harrier, Pavelow or chopper gunner and just as long as at least 1 bullet has went into an enemy PLAYER and the rest of the mag into the air support without missing it counts.
I will test this tonight and see if it works and if it does or not i will let you know

Alright, but if that is the case, it'd still be hard to do with SMG :|