we got tips of call of duty MW3 ya baby!!!!!!

Perks

The following is a list of all perks and their effect:

Tier 1

Recon

Recon: Explosive damage shows target on mini-map
Recon Pro: Bullet damage shows target on mini-map

Sleight Of Hand

Sleight Of Hand: Faster reloading
Sleight Of Hand Pro: Switch weapons quicker

Blind Eye

Blind Eye: Undetectable to air support and sentry guns
Blind Eye Pro: Faster lock-on for launchers, and increased bullet damage to air support and sentries

Extreme Conditioning

Extreme Conditioning: Increased sprint time
Extreme Conditioning Pro: Increased climbing speed

Scavenger

Scavenger: Get ammo from dead enemies
Scavenger Pro: Get more ammo from dead enemies

Tier 2

Quickdraw

Quickdraw: Quicker aiming (ADS)
Quickdraw Pro: Quicker recovery from using grenade/equipment

Blast Shield

Blast Shield: Increased explosive resistance
Blast Shield Pro: Resistance to flash and concussion grenades

Hardline

Hardline: Killstreaks require 1 fewer kill
Hardline Pro: Two assists count as kill towards killstreaks, and deathstreaks require 1 fewer death

Assassin

Assassin: Undetectable by UAV, portable radar, thermal, and heartbeat sensors
Assassin Pro: Immunity to CUAV and EMP, and no red crosshair or name appears when targeted

Overkill

Overkill: Carry two primary weapons; second primary weapon cannot have attachments
Overkill Pro: Second primary weapon can have two attachments

Tier 3

Marksman

Marksman: Identify enemy targets at long range
Marksman Pro: Hold breath longer while sniping

Stalker

Stalker: Increased movement speed while aiming down the sights (ADS)
Stalker Pro: Delay enemy claymore explosions

SitRep

SitRep: Detect enemy explosives and tactical insertions
SitRep Pro: Louder enemy footsteps

Steady Aim

Steady Aim: Increased hip fire accuracy
Steady Aim Pro: Weapon is ready faster after sprinting

Dead Silence

Dead Silence: Quieter movement, and Recon does not work as well against you
Dead Silence Pro: No fall damage

Proficency

The following is a list of the proficiencies for weapons and their attribute:

1. Kick (reduced recoil)
2. Range (increased range)
3. Attachments (equip two attachments)
4. Focus (reduced flinch when shot)
5. Melee (faster melee)
6. Stability (reduced sway)
7. Impact (greater bullet penetration through walls)
8. Speed (faster movement with weapon equipped)
9. Damage (shells do more damage; shotgun only)

Killstreak bonuses

Get the indicated number of consecutive kills in Multiplayer mode to get the corresponding bonus. Note: The Specialist Strike Package allows you to choose three additional perks. The Support Strike Package does not reset your killstreak after dying.

Assault Strike Package

UAV: 3 kills
Care Package: 4 kills
I.M.S. (Intelligent Munitions System): 5 kills
Predator Missile: 5 kills
Sentry Gun: 5 kills
Precision Airstrike: 6 kills
Attack Helicopter: 7 kills
Strafe Run: 9 kills
Little Big Guard: 9 kills
Reaper: 9 kills
Assault Drone: 10 kills
AC-130: 12 kills
Pave Low: 12 kills
Juggernaut: 15 kills
Osprey Gunner: 17 kills

Specialist Strike Package

One extra perk: 2 kills
Two extra perks: 4 kills
Three extra perks: 6 kills
All perks: 8 kills

Support Strike Package

UAV: 4 kills
Counter-UAV: 5 kills
Ballistic Vests: 5 kills
Airdrop Trap: 5 kills
Sam Turret: 8 kills
Recon Drone: 10 kills
Advanced UAV: 12 kills
Remote Turret: 12 kills
Stealth Bomber: 14 kills
EMP: 18 kills
Juggernaut Recon: 18 kills
Escort Airdrop: 18 kills

Deathstreak bonuses

Die the indicated number of times in Multiplayer mode to get the corresponding bonus:

Final Stand: 4 deaths (unlocked at Level 32; enter Last Stand mode after dying with your primary weapon)
Juiced: 4 deaths (move faster for 7.5 seconds after spawning)
Martyrdom: 4 deaths (unlocked at Level 51; drop a live grenade after dying)
Dead Man's Hand: 5 deaths (unlocked at Level 57; enter Last Stand mode after dying with C4 equipped)
Hollow Points: 5 deaths (unlocked at Level 71; bullets cause more damage for one kill)
Revenge: 5 deaths (see position of last enemy that killed you on mini-map)

Weapons, attachments, equipment, and camouflage

The following is a list of the primary weapons, secondary weapons, attachments, equipment, and camouflage in the game, along with the level they are unlocked at in Multiplayer mode:

Assault Rifles

M4A1
M16A4 - 3 round burst
SCAR-L
CM901
TYPE 95 - 3 round burst (Level 32)
G36c (Level 42)
ACR 6.8 (Level 50)
MK14 - Semi-automatic (Level 60)
AK-47 (Level 68)
FAD (Level 78)

Sub Machine Guns

MP5
UMP45
PP90M1
P90 (Level 38)
PM-9 (Level 56)
MP7 (Level 74)

Light Machine Guns

L86 LSW
MG36
PKP Pecheneg
MK46 (Level 54)
M60E4 (Level 72)

Sniper Rifles

Barrett .50 Cal
L118A (bolt action, looks similar to the L96 from Call Of Duty: Black Ops)
Dragunov
AS50
RSASS (Level 44)
MSR (Level 66)

Shotguns

USAS 12
KSG 12
SPAS 12
Striker - Semi-auto (Level 48)
Model 1887 (Level 62)
AA-12

Machine Pistols

FMG9
MP9
Skorpion (Level 36)
G18 (Level 70)

Handguns

USP .45
P99
MP412
.44 Magnum (Level 46)
Five Seven (Level 58)
Desert Eagle (Level 76)

Launchers

SMAW
Javelin
Stinger (Level 40)
XM25 (Level 52)
M320 GLM (Level 64)
RPG (Level 80)

Lethal

Frag Grenade
Semtex Grenade
Throwing Knife
Bouncing Betty Grenade (Level 37)
Claymore (Level 53)
C4 (Level 69)

Tactical

Flash Grenade
Concussion Grenade
Scrambler (like a Jammer)
EMP Grenade
Smoke Grenade
Trophy System (tripod sensor that deflects explosive sent in its direction) (Level 45)
Tactical Insert (Level 61)
Portable Radar (Level 77)

Attachments

Red Dot Sight
Silencer
Grenade Launcher
ACOG
Heartbeat Sensor
Hybrid Sight
Extended Magazines
Thermal Scope
Rapid Fire
Hamr Scope
Holographic Sight
Grip
Variable Zoom Scope

Camouflage

Classic
Snow
Multicam
Digital Urban
Hex
Choco
Snake
Blue
Red
Autumn
Gold

Intel locations

Search the indicated locations to find all 46 Intel laptops:

Easy "Birdie" achievement

The best place to get the "Birdie" achievement is on the "Carbon" map in Special Ops Survival mode when two helicopters spawn in Round 6. Before reaching Round 6, buy 10 claymores and a turret. In total, you should have at least $10,000 at the end of Round 5. Go to the air support crate inside the building, and secure the area with your turret and claymores before starting Round 6. Then, start Round 6, and use Predator missiles to destroy the helicopters ($2,500 per missile). Stay in cover where no enemies can see you. You will get the "Birdie" achievement after shooting down the second helicopter as long as you took no damage at all during the round.

Easy "Get Rich Or Die Trying" achievement

Instead of trying to save up $50,000 by playing solo, play a Special Ops Survival map with two players. Once both players have a total sum of $50,000, go to the shop, and have one player give the other enough money so they have $50,000 to get the "Get Rich Or Die Trying" achievement. Then, give the other player enough money so they have $50,000 and get the achievement as well.

Easy "Jack The Ripper" achievement

In the "Stronghold" mission, when Price tells you to turn your night-vision on and he turns off the lights, quickly run around knifing the enemies to get the "Jack The Ripper" achievement.

Easy "Strike" achievement

At the beginning of the "Persona Non Grata" mission, after leaving the starting area and going down a set of stairs, you will reach a large courtyard. Run to the left side, and kill the enemies that are in your way. Six enemies will come out of an alleyway and stop in front of a door. Cook a frag grenade, then throw it in-between them, and you should get the "Strike" achievement. If you do not kill five of them and get the "Strike" achievement, simply reload the checkpoint and keep trying until you get it.

In the "Return To Sender" mission, when you see a bunch of enemies run across the screen from right to left during the sandstorm (when Echo Team says "We've located Nikolai's chopper. It's a half click south of your position."), reload the checkpoint, then throw a flash bang at them, and toss a frag grenade to kill them all and get the "Strike" achievement.

Achievements

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Back in the Fight (5 points): Start the Single Player Campaign on any difficulty.
Too Big to Fail (10 points): Destroy the Jamming Tower. Complete "Black Tuesday" on any difficulty.
Wet Work (10 points): Take back New York Harbor. Complete "Hunter Killer" on any difficulty.
Carpe Diem (10 points): Escape the mountain safe house. Complete "Persona Non Grata" on any difficulty.
Frequent Flyer (10 points): Defend the Russian President. Complete "Turbulence" on any difficulty.
Up to No Good (10 points): Infiltrate the village. Complete "Back on the Grid" on any difficulty.
One Way Ticket (10 points): Make it to Westminster. Complete "Mind the Gap" on any difficulty.
Welcome to WW3 (10 points): Save the US Vice President. Complete "Goalpost" on any difficulty.
Sandstorm! (10 points): Assault the shipping company. Complete "Return to Sender" on any difficulty.
Back Seat Driver (10 points): Track down Volk. Complete "Bag and Drag" on any difficulty.
We'll Always Have Paris (10 points): Escape Paris with Volk. Complete "Iron Lady" on any difficulty.
Vive la Révolution! (10 points): Reach the church. Complete "Eye of the Storm" on any difficulty.
Requiem (10 points): Escape the city. Complete "Blood Brothers" on any difficulty.
Storm the Castle (10 points): Discover Makarov's next move. Complete "Stronghold" on any difficulty.
Bad First Date (10 points): Find the girl. Complete "Scorched Earth" on any difficulty.
Diamond in the Rough (10 points): Rescue the Russian President. Complete "Down the Rabbit Hole" on any difficulty.
The Big Apple (25 points): Complete "Black Tuesday" and "Hunter Killer" on Veteran difficulty.
Out of the Frying Pan... (25 points): Complete "Persona Non Grata", "Turbulence", and "Back on the Grid" on Veteran difficulty.
Payback (25 points): Complete "Mind the Gap", "Goalpost", and "Return to Sender" on Veteran difficulty.
City of Lights (25 points): Complete "Bag and Drag" and "Iron Lady" on Veteran difficulty.
The Darkest Hour (25 points): Complete "Eye of the Storm", "Blood Brothers", and "Stronghold" on Veteran difficulty.
This is the End (25 points): Complete "Scorched Earth", "Down the Rabbit Hole", and "Dust to Dust" on Veteran difficulty.
Who Dares Wins (40 points): Complete the campaign on any difficulty.
The Best of the Best (100 points): Complete the campaign on Hardened or Veteran difficulty.
Strike! (20 points): Kill 5 enemies with a single grenade in Single Player or Special Ops.
Jack the Ripper (20 points): Melee 5 enemies in a row in Single Player or Special Ops.
Informant (20 points): Collect 22 Intel Items.
Scout Leader (35 points): Collect 46 Intel Items.
This Is My Boomstick (20 points): Kill 30 enemies with the XM25 in "Black Tuesday."
What Goes Up... (20 points): Destroy all the choppers with only the UGV's grenade launcher in "Persona Non Grata."
For Whom the Shell Tolls (20 points): Destroy all targets during the mortar sequence with only 4 shells in "Back on the Grid."
Kill Box (20 points): Kill 20 enemies with the Chopper Gunner in a single run in "Return to Sender."
Danger Close (20 points): Take down a chopper with an AC-130 smoke grenade in "Bag and Drag."
Ménage à Trois (20 points): Destroy 3 tanks with a single 105mm shot in "Iron Lady."
Nein (20 points): Kill 9 enemies with A-10 strafing runs in "Scorched Earth."
50/50 (20 points): Complete a Special Ops Mission Mode game with the same number of kills as your partner.
Birdie (20 points): Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.
Serrated Edge (15 points): Finish a Juggernaut with a knife in Special Ops.
Arms Dealer (20 points): Buy all items from the Survival Weapon Armory.
Danger Zone (20 points): Buy all items from the Survival Air Support Armory.
Defense Spending (20 points): Buy all items from the Survival Equipment Armory.
Get Rich or Die Trying (25 points): Have $50,000 current balance in a Special Ops Survival game.
I Live (10 points): Survive 1 wave in a Special Ops Survival game.
Survivor (20 points): Reach Wave 10 in each mission of Special Ops Survival mode.
Unstoppable (40 points): Reach Wave 15 in each mission of Special Ops Survival mode.
No Assistance Required (20 points): Complete a Special Ops Mission Mode game on Hardened or Veteran with no player getting downed.
Brag Rags (10 points): Earn 1 star in Special Ops Mission Mode.
Tactician (20 points): Earn 1 star in each mission of Special Ops Mission Mode.
Overachiever (40 points): Earn 48 stars in Special Ops Mission Mode.

Additionally, there is one secret achievement:

Flight Attendant (20 points): Kill all 5 enemies during the zero-g sequence in "Turbulence."

The following achievements require the "Content Collection 1" bonus downloadable content:

Shotgun Diplomacy (15 points): Complete the Special Ops mission "Negotiator" on any difficulty.
Not on My Watch (35 points): Rescue all the hostages in the Special Ops mission "Negotiator."
Skilled Negotiator (25 points): Complete the Special Ops mission "Negotiator" on Veteran difficulty.
Slippery Slope (15 points): Complete the "Black Ice" Special Ops mission on any difficulty.
A Baker's Dozen (35 points): Run over and kill 13 enemies with the snowmobile in the "Black Ice" Special Ops mission.
Ice in Your Veins (35 points): Complete the "Black Ice" Special Ops mission on Veteran difficulty.

The following achievements require the "Content Collection 2" bonus downloadable content:

Don't Tread on Me (15 points): Complete the "Iron Clad" Special Ops mission on any difficulty.
High Roller (25 points): Complete the "Iron Clad" Special Ops mission on Veteran difficulty.
Not a Scratch (35 points): Finish with your tank at full health in the "Iron Clad" Special Ops mission.
One-Four-One (15 points): Complete the "Kill Switch" Special Ops mission on any difficulty.
Helipocalypse (30 points): Destroy 6 helicopters in the "Kill Switch" Special Ops mission.
EMPressive... (30 points): Complete the "Kill Switch" Special Ops mission on Veteran difficulty.

The following achievements require the "Content Collection 3" bonus downloadable content:

Stay Frosty (15 points): Complete the "Arctic Recon" Special Ops mission on any difficulty.
Sub Zero (25 points): Complete the "Arctic Recon" Special Ops mission on Veteran difficulty.
dr0n3d (35 points): Complete the "Arctic Recon" Special Ops mission in under 3:30.
Apex (15 points): Complete the "Vertigo" Special Ops mission on any difficulty.
Pinnacle (20 points): Complete the "Vertigo" Special Ops mission on Veteran difficulty.
Flyswatter (15 points): Destroy all helicopters in the "Vertigo" Special Ops mission.
To Jugger or to Jugger-Naut (25 points): Kill all juggernauts after they land on Veteran difficulty in the "Vertigo" Special Ops mission.
Handle with Care (10 points): Complete the "Special Delivery" Special Ops mission on any difficulty.
Deliver This (25 points): Complete the "Special Delivery" Special Ops mission on Veteran difficulty.
Discriminating Buyer (15 points): Use exactly one of each care package in the "Special Delivery" Special Ops mission.
Untouchable (25 points): Use only one self revive care package in the "Special Delivery" Special Ops mission.
Siege (15 points): Complete the "Light 'Em Up" Special Ops mission on any difficulty.
Lights Out (15 points): Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.
Deer in the Headlights (45 points): Stab five stunned enemies in a row in the "Light 'Em Up" Special Ops mission.

Cheat Code Central (http://s.tt/1dCrJ)