| AK-47 |
| Complete the "headshots" goal in mission 6-1. |
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| Fall With Elevator |
| Start level 6-2 (Into The Abyss). Kill all the guards in this little area, but make sure not to lose any health. Go through the door directly ahead, then go to the left. Do not kill the civilian. Then go to the right to where the elevator blows and go into the intermission sequence. Run to the platform. Go down the ladder and shoot open the door so that the civilians can get out. Do not get off the elevator. Instead, go to the back right corner and stay there. You will fall with the elevator and lose much of your health. However, you will not be dead and can see through the walls. Note: The only way to exit is to die. |
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| Increased Melee Damage |
| Only available online. Increases your damage done by melee moves such as kicking and elbowing. |
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| M-134 Minigun |
| In the "Jimmy Zhou's Army" bonus mission, the last enemy before Zhou will have a minigun. Kill him when he is not against a wall. You will most likely be able to retrieve the minigun. |
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| M4 Silenced Weapon |
| Get 10 headshots in Mission 7-1 under the hard difficulty setting to unlock the M4 Silenced in Mission mode. |
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| Multiplayer Weapons |
Each time you rank up or obtain certain badges in multiplayer, you unlock new weapons. These weapons are unlocked for Multiplayer use only. Guns are listed in order, Team 1 weapons first and Team 2 weapons second.
| Effect | How to unlock |
| 33 SC-1 and SG-76 H-Bar (Snipers) | Achieve rank R2
| | AR-15 and Draugonov (Snipers) | Achieve rank T2
| | Claymore Mines | Earn Expert Gadget Expertise Badge
| | Desert Sniper .357 and SP-57 (Pistols) | Achieve rank O3
| | Double Sawn-Offs (Pistol) | Earn Elite One-handed skill badge
| | EMP Grenades | Earn Expert Explosive Expertise Badge
| | EPDD | Earn Elite Hand to Hand Combat Badge
| | G-17 and Makarov (Pistols) | Start a new account (R0)
| | Laser Mines | Earn Elite Gadget Expertise Badge
| | M16 A2 and Famas(ARs, burst fire) | Start a new account (R0)
| | M16K and Galil (ARs, Full Auto) | Achieve rank O2
| | M60 E-3 and Chinese Type-56 (HMGs) | Achieve rank O1
| | M67 Grenades | Earn Elite Explosive Expertise Badge
| | MDS A3 and Spectre (Full Auto SMGs) | Achieve rank R1
| | MDS-7 and Ripper (SMGs in pistol slot) | Achieve rank T1
| | Shot Defender and SPA-12 (Shotguns) | Achieve rank R3
| | Trip Bar and Ramat (HMGs/ARs) | Achieve rank T3
| | USAS-12 and Sawed Off (Shotguns) | Achieve rank 04
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| Online Badges |
Here are ways to earn/unlock badges while playing online Multiplayer.
| Effect | How to unlock |
| Ammo Expertise | Expert: Around 250 Headshots; Elite: around 500 Headshots
| | Armor Expertise | Expert and Elite badges are earned by finding Flak Jackets.
| | Explosive Expertise | Expert: Around 200 Exp. kills(MGL, SMAW or M67) Elite: 500 Exp. kills
| | Field Medic | Expert and Elite: HEAL!!!! Just keep on Healing!
| | Gadget Expertise | Expert and Elite: Get Kills with Taser, Laser Mines, Claymores
| | Hand-To-Hand | Expert: Around 30 Melee kills; Elite: Around 50 Melee Kills
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| R1 Multi-player Rank |
| Get 70 kills in multi-player mode. |
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| SP-57 Weapon |
| Successfully complete Training Mission 1 with a time less than 1:35. To do this, go halfway through the mission until you reach the point where you must use the night vision goggles to find the code and unlock the door. When you reach this point after crawling through the crawl space, turn right and climb over the crate. Go forward until you fall off, and there will be a crate directly on your right. Climb it and there will be a zip-line. This will take you to the end of the mission. |
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| Unlock Birds Of A Feather |
| Successfully finish Story mode under the normal or hard difficulty setting. |
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| Unlock FAMAS Weapon |
| Successfully finish the 2nd training mission in single player mode under 3 minutes. |
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| Unlock Goodnight, Sweetheart |
| Beat all the time limits in all Training missions. |
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| Unlock Jimmy Zhou's Army |
| Successfully finish the Birds Of A Feather bonus mission. |
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| Unlock M1 Super 90 Weapon |
| Destroy 5 DU containers in Mission 4-1 in single player mode. |
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| Unlock M16A2 Weapon |
| Destroy 5 DU containers in Mission 4-2 in single player mode. |
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| Unlock M249 SAW Weapon |
| Successfully finish the KemSynth Tower mission with a time less than 2:45. |
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| Unlock M4 Carbine Weapon |
| Destroy 5 DU containers in Mission 4-3 in single player mode. |
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| Unlock Shot Defender Weapon |
| Finish the Sana Yemen mission with a time less than 3:40. |
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| Unlock SMAW Rocket Launcher Weapon |
| Shoot all the small warheads in Mission 4-3. |
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| Unlock Trapped In The Hornets Nest |
| Get all Combat Sharp Shooter patches. |
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| Unlock UNP.45 Weapon |
| Successfully finish training mission three without wasting a shot. |
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| Unlock Up A Column Without A Paddle |
| Get all Elite Weapons Expert patches. |
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