Challenges/Call of Duty 4: Modern Warfare

In Call of Duty 4: Modern Warfare, challenges are awarded to the player in 5 Tiers and increase experience points depending on the difficulty the challenge was to complete. Each one is more challenging than the previous. While the normal challenges give out 50-250 experience points, the weapon-based challenges can give up to 1000 XP when they are completed. Marksman challenges are based on the amount of kills with a weapon, and unlock special attachments like a Silencer or Red Dot Sight to attach to the weapon the challenge was achieved with. Weapon Expert challenges unlock "weapon camouflages" (alternate skins for a weapon) in a similar fashion, though only headshots are counted.
==Barracks Challenges==
===Boot Camp===
The boot camp challenges in Call of Duty 4: Modern Warfare task players with getting to grips with the basics of multiplier such as earning and using killstreaks, using perks and using prone and crouch.
Challenge 	Description 	Rewards
Radar Inbound 	Kill 3 enemies without dying and call in a UAV 	50 XP
Airstrike Inbound	Kill 5 enemies without dying and call in an Airstrike	50 XP
Chopper Inbound 	Kill 7 enemies without dying and call in a helicopter	50 XP
Fly Swatter 	Shoot Down an Enemy Helicopter 	250 XP
Marathon 	Sprint for 26 miles total 	250 XP
Goodbye 	Fall 30 feet or more to your death 	250 XP
Base Jump 	Fall 15 feet or more and survive 	250 XP
Crouch Shot I 	Kill 5 enemies while crouching 	50 XP
Crouch Shot II 	Kill 15 enemies while crouching 	100 XP
Crouch Shot III 	Kill 30 enemies while crouching 	250 XP
Prone Shot I 	Kill 5 enemies while you are prone 	50 XP
Prone Shot II 	Kill 15 enemies while you are prone 	100 XP
Prone Shot III 	Kill 30 enemies while you are prone 	250 XP
Grenade Kill I 	Kill 1 enemy with a grenade 	50 XP
Grenade Kill II 	Kill 5 enemies with a grenade 	150 XP
Grenade Kill III 	Kill 10 enemies with a grenade 	250 XP
Point Guard I 	Get 5 assists 	50 XP
Point Guard II 	Get 15 assists 	150 XP
Point Guard III 	Get 30 assists 	250 XP
X-Ray Vision I 	Kill 1 enemy through a wall using Deep Impact 	50 XP
X-Ray Vision II 	Kill 5 enemies through a wall using Deep Impact 	150 XP
X-Ray Vision III 	Kill 15 enemies through a wall using Deep Impact 	250 XP
Vandalism I 	Blow up 1 car 	50 XP
Vandalism II 	Blow up 5 cars 	100 XP
Vandalism III 	Blow up 15 cars 	250 XP
Backdraft I 	Destroy 1 enemy explosive device 	50 XP
Backdraft II 	Destroy 5 enemy explosive devices 	100 XP
Backdraft III 	Destroy 15 enemy explosive devices 	250 XP
Knife Vereran I 	Kill 1 enemy with the knife melee attack 	50 XP
Knife Vereran II 	Kill 5 enemies with the knife melee attack 	100 XP
Knife Vereran III	Kill 15 enemies with the knife melee attack 	250 XP
===Operations===
To complete operations challenges, players must win matches and complete objectives in the various game modes.
Challenge 	Description 	Rewards
Free-For-All Victor I 	Place in the top 3 in 1 Free for All match 	50 XP
Free-For-All Victor II 	Place in the top 3 in 5 Free for All matches 	100 XP
Free-For-All Victor III 	Place in the top 3 in 15 Free for All matches 	250 XP
Team Player I 	Win 5 Team Deathmatch matches 	50 XP
Team Player II 	Win 15 Team Deathmatch matches 	100 XP
Team Player III 	Win 30 Team Deathmatch matches 	250 XP
Search And Destroy Victor I 	Win 5 Search and Destroy matches 	50 XP
Search And Destroy Victor II 	Win 15 Search and Destroy matches 	100 XP
Search And Destroy Victor III	Win 30 Search and Destroy matches 	250 XP
MVP Team Deathmatch 	Get the top scrore overall in a Team Deathmatch game 	250 XP
Hardcore Team Player I 	Win a Hardcore Team Deathmatch game 	50 XP
Hardcore Team Player II 	Win 5 Hardcore Team Deathmatch games 	100 XP
Hardcore Team Player III 	Win 15 Hardcore Team Deathmatch games 	250 XP
Sabotage Victor I 	Win 5 Sabotage games 	50 XP
Sabotage Victor II 	Win 20 Sabotage games 	100 XP
Sabotage Victor III 	Win 50 Sabotage games 	250 XP
MVP Team Hardcore 	Get the top score overall in a Team Hardcore game 	250 XP
Bomb Down 	Kill the bomb carrier in either Search and Destroy or Sabotage 	250 XP
Bomb Defender 	Kill the Bomb defuser in a Search and Destroy or Sabotage match	250 XP
Bomb Planter 	Kill the Bomb planter in a Search and Destroy or Sabotage match	250 XP
Hero 	Defuse a bomb in Search and Destroy 	250 XP
Last Man Standing 	Be the last man standing in Search and Destroy 	250 XP
===Killer===
Killer challenges task the player with killing opposing players using different weapon types and killstreaks.
Challenge 	Description 	XP Reward
Claymore Shot 	Kill 5 enemies using claymores 	250 XP
Assault Expert I 	Kill 5 enemies with a headshot using an Assault Rifle 	50 XP
Assault Expert II 	Kill 25 enemies with a headshot using an assault rifle 	100 XP
Assault Expert III 	Kill 50 enemies with a headshot using an assault rifle 	250 XP
SMG Expert I 	Kill 5 enemies with a headshot using an SMG 	50 XP
SMG Expert II 	Kill 25 enemies with a headshot using an SMG 	100 XP
SMG Expert III 	Kill 50 enemies with a headshot using an SMG 	250 XP
LMG Expert I 	Kill 5 enemies with a headshot using an LMG 	50 XP
LMG Expert II 	Kill 25 enemies with a headshot using an SMG 	100 XP
LMG Expert III 	Kill 50 enemies with a headshot using an LMG 	250 XP
Last Stand Veteran I 	Kill 1 enemy using Last Stand perk 	50 XP
Last Stand Veteran II 	Kill 5 enemy using Last Stand perk 	100 XP
Last Stand Veteran III	Kill 15 enemy using Last Stand perk 	250 XP
Master Chef I 	Kill 5 enemies using a cooked grenade 	50 XP
Master Chef II 	Kill 10 enemies using a cooked grenade 	100 XP
Master Chef III 	Kill 20 enemies using a cooked grenade 	250 XP
Airstrike Veteran I 	Kill 5 enemies by calling in an airstrike 	50 XP
Airstrike Veteran II 	Kill 15 enemies by calling in an airstrike 	100 XP
Airstrike Veteran III 	Kill 30 enemies by calling in an airstrike 	250 XP
Chopper Veteran I 	Kill 5 enemies by calling in a chopper 	50 XP
Chopper Veteran II 	Kill 15 enemies by calling in a chopper 	100 XP
Chopper Veteran III 	Kill 30 enemies by calling in a chopper 	250 XP
Stun Veteran I 	Kill 5 enemies dazed by a stun grenade 	50 XP
Stun Veteran II 	Kill 10 enemies dazed by a stun grenade 	100 XP
Stun Veteran III 	Kill 25 enemies dazed by a stun grenade 	250 XP
Multi RPG 	Kill 2 or more enemies with a single RPG shot 	250 XP
Martyrdom Veteran I 	Kill 1 enemy with a dropped grenade from the Martyrdom perk 	50 XP
Martyrdom Veteran II 	Kill 10 enemies with a dropped grenade from the Martyrdom perk	100 XP
Martyrdom Veteran III 	Kill 25 enemies with a dropped grenade from the Martyrdom perk	250 XP
Stealth I 	Kill 10 enemies with a silenced weapon 	50 XP
Stealth II 	Kill 25 enemies with a silenced weapon 	100 XP
Stealth III 	Kill 50 enemies with a silenced weapon 	250 XP
Invisible I 	Kill 5 enemies with a sniper rifle 	50 XP
Invisible II 	Kill 25 enemies with a sniper rifle 	100 XP
Invisible III 	Kill 50 enemies with a sniper rifle 	250 XP
Counter Claymore I 	Kill 1 enemy by shooting a claymore 	50 XP
Counter Claymore II 	Kill 5 enemies by shooting a claymore 	100 XP
Counter Claymore III 	Kill 10 enemies by shooting a claymore 	250 XP
Counter C-4 I 	Kill 1 enemy by shooting a $-4 	50 XP
Counter C-4 II 	Kill 5 enemies by shooting a C-4 	100 XP
Counter C-4 III 	Kill 10 enemies by shooting a C-4 	250 XP
===Humiliation===
For humiliation challenges, the player must earn kills using more precise and unconventional methods than usual.
Challenge 	Description 	Rewards
AirBourne 	Get a 2 kill streak with bullets while in mid-air 	250 XP
Multi-Frag 	kill 2 enemies or more with a single a frag grenade 	250 XP
CarpetBomb 	Kill 5 enemies with a single airstrike. 	250 XP
MG Master 	Get a 5 kill streak while mounted on a machine gun. 	250 XP
Slasher 	Get a 3 melee kill streak without dying. 	250 XP
Multi C-4 	Kill 2 enemies or more with a single C-4 pack. 	250 XP
Hot Potato I 	Kill 1 enemy with a thrown back grenade. 	50 XP
Hot Potato II 	Kill 5 enemies with a thrown back grenade. 	100 XP
Hot Potato III 	Kill 15 enemies with a thrown back grenade. 	250 XP
Car Bomb 	Kill 1 enemy by destroying a car. 	250 XP
BackStabber 	Stab an enemy in the back with your knife. 	250 XP
Slow But Sure 	Kill 1 enemy while stunned by a stun grenade. 	250 XP
Flashbang Veteran I 	Kill 5 enemies dazed by a flashbang. 	50 XP
Flashbang Veteran II 	Kill 10 enemies dazed by a flashbang. 	100 XP
Flashbang Veteran III 	Kill 25 enemies dazed by a flashbang. 	250 XP
Misery Loves Company I 	Kill yourself and 1 enemy by cooking a grenade but not throwing it. 	50 XP
Misery Loves Company II 	Kill yourself and a 2nd enemy by cooking a grenade but not throwing it. 	100 XP
Misery Loves Company III	Kill yourself and 3rd enemy by cooking a grenade but not throwing it. 	250 XP
Ouch I 	Kill an enemy with a rifle-mouted grenade laucher without detonation. 	50 XP
Ouch II 	Kill 5 enemies with a rifle-mouted grenade laucher without detonation. 	100 XP
Ouch III 	Kill 15 enemies with a rifle-mouted grenade laucher without detonation. 	250 XP
Rival 	Kill the same enemy 5 times in a single match. 	250 XP
Cruelty 	Kill an enemy, pick up his weapon, and kill the enemy with his weapon. 	250 XP
Think Fast 	Finish an enemy off by hitting an enemy with a Frag grenade (direct Impact). 	250 XP
Think Fast Stun 	Finish an enemy off by hitting an enemy with a stun grenade (direct Impact). 	250 XP
Think Fast Flash 	Finish an enemy off by hitting an enemy with a flash grenade (direct Impact).	250 XP
Return to Sender 	Kill an enemy by shooting his C-4. 	250 XP
BlindFire 	Kill an enemy when you are still dazed by a flashbang. 	250 XP
===Elite===
Elite challenges are arguably the most difficult in the game to complete. For the most part, they either require a high level of skill or a rare scenario to present itself to the player for completion.
Challenge 	Description 	Rewards
The Brink 	Get a kill streak of 3 or more while near death. 	250 XP
Collateral Damage	Kill 2 enemies with one sniper rifle bullet. 	250 XP
The Edge I 	Get the last kill in a match. 	50 XP
The Edge II 	Get the last kill in a match 5 times. 	100 XP
The Edge III 	Get the last kill in a match 19 times. 	250 XP
Flawless 	Play the entire full length match without dying. 	250 XP
Tango Down 	Kill every member of the enemy team (4-player mininum). 	250 XP
Hard Landing 	Kill an enemy in mid-air. 	250 XP
Extreme Cruelty 	Kill every member of the opposing team without dying. 	250 XP
Fast Swap 	Hurt an enemy with a primary weapon, and then finish them of with a pistol.	250 XP
Star Player 	Play an entire match within any game mode with a 5:1 kill death ratio. 	250 XP
How the? 	Kill an enemy using Deep Impact to shoot an explosive through a wall. 	250 XP
Dominos 	Kill an enmemy by setting off a chain reaction of explosives. 	250 XP
No Secrets 	Call in a UAV 3 times in a single match. 	250 XP
Afterburner 	Call in an airstrike 2 times in a single match. 	250 XP
Air Superiority 	Call in a helicopter 2 times in a single match. 	250 XP
Fearless 	Kill 10 enemies in a single match without dying. 	250 XP
Counter-MVP 	Kill the #1 player on the opposing team 10 times in a single match. 	250 XP
Invincible 	Get 5 health regenerations from an enemy damage, in a row without dying. 	250 XP
Survivalist 	Survive for 5 consecutive minutes. 	250 XP
==Marksman Challenges==
===Assault Rifles===
Challenge 	Description 	Rewards
M16A4 Marksman I 	Get 25 kills with the M16A4. 	Red Dot Sight + 50 XP
M16A4 Marksman II 	Get 75 kills with the M16A4. 	Silencer + 500 XP
M16A4 Marksman III 	Get 150 kills with the M16A4. 	ACOG Scope + 1000 XP
AK-47 Marksman I 	Get 25 kills with the AK-47. 	Red Dot Sight + 50 XP
AK-47 Marksman II 	Get 75 kills with the AK-47. 	Silencer + 500 XP
AK-47 Marksman III 	Get 150 kills with the AK-47. 	ACOG Scope + 1000 XP
M4 Carbine Marksman I 	Get 25 kills with the M4 Carbine. 	Red Dot Sight + 50 XP
M4 Carbine Marksman II 	Get 75 kills with the M4 Carbine. 	Silencer + 500 XP
M4 Carbine Marksman III	Get 150 kills with the M4 Carbine.	ACOG Scope + 1000 XP
G3 Marksman I 	Get 25 kills with the G3. 	Red Dot Sight + 50 XP
G3 Marksman II 	Get 75 kills with the G3. 	Silencer + 500 XP
G3 Marksman III 	Get 150 kills with the G3. 	ACOG Scope + 1000 XP
G36C Marksman I 	Get 25 kills with the G36C. 	Red Dot Sight + 50 XP
G36C Marksman II 	Get 75 kills with the G36C. 	Silencer + 500 XP
G36C Marksman III 	Get 150 kills with the G36C. 	ACOG Scope + 1000 XP
M14 Marksman I 	Get 25 kills with the M14. 	Red Dot Sight + 50 XP
M14 Marksman II 	Get 75 kills with the M14. 	Silencer + 500 XP
M14 Marksman III 	Get 150 kills with the M14. 	ACOG Scope + 1000 XP
===SMGs===
Challenge 	Description 	Rewards
MP5 Marksman I 	Get 25 kills with the MP5. 	Red Dot Sight + 50 XP
MP5 Marksman II 	Get 75 kills with the MP5. 	Silencer + 500 XP
MP5 Marksman III 	Get 150 kills with the MP5. 	ACOG Scope + 1000 XP
Skorpion Marksman I 	Get 25 kills with the Skorpion. 	Red Dot Sight + 50 XP
Skorpion Marksman II 	Get 75 kills with the Skorpion. 	Silencer + 500 XP
Skorpion Marksman III	Get 150 kills with the Skorpion.	ACOG Scope + 1000 XP
Mini-Uzi Marksman I 	Get 25 kills with the Mini-Uzi. 	Red Dot Sight + 50 XP
Mini-Uzi Marksman II 	Get 75 kills with the Mini-Uzi. 	Silencer + 500 XP
Mini-Uzi Marksman III	Get 150 kills with the Mini-Uzi.	ACOG Scope + 1000 XP
AK-74u Marksman I 	Get 25 kills with the AK-74u. 	Red Dot Sight + 50 XP
AK-74u Marksman II 	Get 75 kills with the AK-74u. 	Silencer + 500 XP
AK-74u Marksman III 	Get 150 kills with the AK-74u. 	ACOG Scope + 1000 XP
P90 Marksman I 	Get 25 kills with the P90. 	Red Dot Sight + 50 XP
P90 Marksman II 	Get 75 kills with the P90. 	Silencer + 500 XP
P90 Marksman III 	Get 150 kills with the P90. 	ACOG Scope + 1000 XP
===LMGs===
Challenge 	Description 	Rewards
M249 SAW Marksman I 	Get 25 kills with the M249 SAW. 	Red Dot Sight + 50 XP
M249 SAW Marksman II 	Get 75 kills with the M249 SAW. 	Silencer + 500 XP
M249 SAW Marksman III	Get 150 kills with the M249 SAW.	ACOG Scope + 1000 XP
RPD Marksman I 	Get 25 kills with the RPD. 	Red Dot Sight + 50 XP
RPD Marksman II 	Get 75 kills with the RPD. 	Silencer + 500 XP
RPD Marksman III 	Get 150 kills with the RPD. 	ACOG Scope + 1000 XP
M60E4 Marksman I 	Get 25 kills with the M60E4. 	Red Dot Sight + 50 XP
M60E4 Marksman II 	Get 75 kills with the M60E4. 	Silencer + 500 XP
M60E4 Marksman III 	Get 150 kills with the M60E4. 	ACOG Scope + 1000 XP
=== Shotguns ===
Challenge 	Description 	Rewards
W1200 Marksman I 	Get 25 kills with the W1200.	Red Dot Sight + 50 XP
W1200 Marksman II	Get 50 kills with the W1200.	Foregrip + 500 XP
M1014 Marksman I 	Get 25 kills with the M1014.	Red Dot Sight + 50 XP
M1014 Marksman II	Get 50 kills with the M1014.	Foregrip + 500 XP
===Sniper Rifles===
Challenge 	Description 	Rewards
M40A3 Marksman I 	Get 100 kills with the M40A3. 	ACOG Scope + 500 XP
M21 Marksman I 	Get 100 kills with the M21. 	ACOG Scope + 500 XP
Dragunov Marksman I 	Get 100 kills with the Dragunov. 	ACOG Scope + 500 XP
R700 Marksman I 	Get 100 kills with the R700. 	ACOG Scope + 500 XP
Barrett .50cal Marksman I	Get 100 kills with the Barrett .50cal.	ACOG Scope + 500 XP
==Expert Challenges==
===Assault Rifles===
Challenge 	Description 	Rewards
M16A4 Expert I 	Get 25 headshots with the M16A4. 	Digital Camouflage + 100 XP
M16A4 Expert II 	Get 75 headshots with the M16A4. 	Blue Tiger Camouflage + 500 XP
M16A4 Expert III 	Get 150 headshots with the M16A4. 	Red Tiger Camouflage + 500 XP
AK-47 Expert I 	Get 25 headshots with the AK-47. 	Digital Camouflage + 100 XP
AK-47 Expert II 	Get 75 headshots with the AK-47. 	Blue Tiger Camouflage + 500 XP
AK-47 Expert III 	Get 150 headshots with the AK-47. 	Red Tiger Camouflage + 500 XP
M4 Carbine Expert I 	Get 25 headshots with the M4 Carbine. 	Digital Camouflage + 100 XP
M4 Carbine Expert II 	Get 75 headshots with the M4 Carbine. 	Blue Tiger Camouflage + 500 XP
M4 Carbine Expert III	Get 150 headshots with the M4 Carbine.	Red Tiger Camouflage + 500 XP
G3 Expert I 	Get 25 headshots with the G3. 	Digital Camouflage + 100 XP
G3 Expert II 	Get 75 headshots with the G3. 	Blue Tiger Camouflage + 500 XP
G3 Expert III 	Get 150 headshots with the G3. 	Red Tiger Camouflage + 500 XP
G36C Expert I 	Get 25 headshots with the G36C. 	Digital Camouflage + 100 XP
G36C Expert II 	Get 75 headshots with the G36C. 	Blue Tiger Camouflage + 500 XP
G36C Expert III 	Get 150 headshots with the G36C. 	Red Tiger Camouflage + 500 XP
M14 Expert I 	Get 25 headshots with the M14. 	Digital Camouflage + 100 XP
M14 Expert II 	Get 75 headshots with the M14. 	Blue Tiger Camouflage + 500 XP
M14 Expert III 	Get 150 headshots with the M14. 	Red Tiger Camouflage + 500 XP
MP44 Expert I 	Get 25 headshots with the MP44. 	Digital Camouflage + 100 XP
MP44 Expert II 	Get 75 headshots with the MP44. 	Blue Tiger Camouflage + 500 XP
MP44 Expert III 	Get 150 headshots with the MP44. 	Red Tiger Camouflage + 500 XP
===SMGs===
Challenge 	Description 	Rewards
MP5 Expert I 	Get 25 headshots with the MP5. 	Digital Camouflage + 100 XP
MP5 Expert II 	Get 75 headshots with the MP5. 	Blue Tiger Camouflage + 500 XP
MP5 Expert III 	Get 150 headshots with the MP5. 	Red Tiger Camouflage + 500 XP
Skorpion Expert I 	Get 25 headshots with the Skorpion. 	Digital Camouflage + 100 XP
Skorpion Expert II 	Get 75 headshots with the Skorpion. 	Blue Tiger Camouflage + 500 XP
Skorpion Expert III	Get 150 headshots with the Skorpion.	Red Tiger Camouflage + 500 XP
Mini-Uzi Expert I 	Get 25 headshots with the Mini-Uzi. 	Digital Camouflage + 100 XP
Mini-Uzi Expert II 	Get 75 headshots with the Mini-Uzi. 	Blue Tiger Camouflage + 500 XP
Mini-Uzi Expert III	Get 150 headshots with the Mini-Uzi.	Red Tiger Camouflage + 500 XP
AK-74u Expert I 	Get 25 headshots with the AK-74u. 	Digital Camouflage + 100 XP
AK-74u Expert II 	Get 75 headshots with the AK-74u. 	Blue Tiger Camouflage + 500 XP
AK-74u Expert III 	Get 150 headshots with the AK-74u. 	Red Tiger Camouflage + 500 XP
P90 Expert I 	Get 25 headshots with the P90. 	Digital Camouflage + 100 XP
P90 Expert II 	Get 75 headshots with the P90. 	Blue Tiger Camouflage + 500 XP
P90 Expert III 	Get 150 headshots with the P90. 	Red Tiger Camouflage + 500 XP
===LMGs===
Challenge 	Description 	Rewards
M249 SAW Expert I 	Get 25 headshots with the M249 SAW. 	Digital Camouflage + 100 XP
M249 SAW Expert II 	Get 75 headshots with the M249 SAW. 	Blue Tiger Camouflage + 500 XP
M249 SAW Expert III	Get 150 headshots with the M249 SAW.	Red Tiger Camouflage + 500 XP
RPD Expert I 	Get 25 headshots with the RPD. 	Digital Camouflage + 100 XP
RPD Expert II 	Get 75 headshots with the RPD. 	Blue Tiger Camouflage + 500 XP
RPD Expert III 	Get 150 headshots with the RPD. 	Red Tiger Camouflage + 500 XP
M60E4 Expert I 	Get 25 headshots with the M60E4. 	Digital Camouflage + 100 XP
M60E4 Expert II 	Get 75 headshots with the M60E4. 	Blue Tiger Camouflage + 500 XP
M60E4 Expert III 	Get 150 headshots with the M60E4. 	Red Tiger Camouflage + 500 XP
===Shotguns===
Challenge 	Description 	Rewards
W1200 Expert I 	Get 25 headshots with the W1200. 	Digital Camouflage + 100 XP
W1200 Expert II 	Get 50 headshots with the W1200. 	Blue Tiger Camouflage + 500 XP
W1200 Expert III	Get 100 headshots with the W1200.	Red Tiger Camouflage + 500 XP
M1014 Expert I 	Get 25 headshots with the M1014. 	Digital Camouflage + 100 XP
M1014 Expert II 	Get 50 headshots with the M1014. 	Blue Tiger Camouflage + 500 XP
M1014 Expert III	Get 100 headshots with the M1014.	Red Tiger Camouflage + 500 XP
===Sniper Rifles===
Challenge 	Description 	Rewards
M40A3 Expert I 	Get 25 headshots with the M40A3. 	Digital Camouflage + 100 XP
M40A3 Expert II 	Get 75 headshots with the M40A3. 	Blue Tiger Camouflage + 500 XP
M40A3 Expert III 	Get 150 headshots with the M40A3. 	Red Tiger Camouflage + 500 XP
M21 Expert I 	Get 25 headshots with the M21. 	Digital Camouflage + 100 XP
M21 Expert II 	Get 75 headshots with the M21. 	Blue Tiger Camouflage + 500 XP
M21 Expert III 	Get 150 headshots with the M21. 	Red Tiger Camouflage + 500 XP
Dragunov Expert I 	Get 25 headshots with the Dragunov. 	Digital Camouflage + 100 XP
Dragunov Expert II 	Get 75 headshots with the Dragunov. 	Blue Tiger Camouflage + 500 XP
Dragunov Expert III 	Get 150 headshots with the Dragunov. 	Red Tiger Camouflage + 500 XP
R700 Expert I 	Get 25 headshots with the R700. 	Digital Camouflage + 100 XP
R700 Expert II 	Get 75 headshots with the R700. 	Blue Tiger Camouflage + 500 XP
R700 Expert III 	Get 150 headshots with the R700. 	Red Tiger Camouflage + 500 XP
Barrett .50cal Expert I 	Get 25 headshots with the Barrett .50cal. 	Digital Camouflage + 100 XP
Barrett .50cal Expert II 	Get 75 headshots with the Barrett .50cal. 	Blue Tiger Camouflage + 500 XP
Barrett .50cal Expert III	Get 150 headshots with the Barrett .50cal.	Red Tiger Camouflage + 500 XP
Category:Call of Duty 4: Modern Warfare
Category:Challenges per game