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.
Increased Melee Damage
Only available online. Increases your damage done by melee moves such as kicking and elbowing.
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.
M4 Silenced weapon
Get 10 headshots in Mission 7-1 under the hard difficulty setting to unlock the M4 Silenced in Mission mode.
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
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
R1 multi-player rank
Get 70 kills in multi-player mode.
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.
Training Rewards
From the main menu select single player. Then select training mode. Then choose the training level you wish to try.
Reward
How to unlock
Famas
Complete the second training mission in under 3 minutes.
SP-57
Training Mission 1: Complete this mission in under 1 minute and 25 seconds.
UNP .45
Training Mission 3: Complete this mission without wasting a shot.
Unlock Birds Of A Feather
Successfully finish Story mode under the normal or hard difficulty setting.
Unlock FAMAS weapon
Successfully finish the 2nd training mission in single player mode under 3 minutes.
Unlock Goodnight, Sweetheart
Beat all the time limits in all Training missions.
Unlock Jimmy Zhou's Army
Successfully finish the Birds Of A Feather bonus mission.
Unlock M1 Super 90 weapon
Destroy 5 DU containers in Mission 4-1 in single player mode.
Unlock M16A2 weapon
Destroy 5 DU containers in Mission 4-2 in single player mode.
Unlock M249 SAW weapon
Successfully finish the KemSynth Tower mission with a time less than 2:45.
Unlock M4 Carbine weapon
Destroy 5 DU containers in Mission 4-3 in single player mode.
Unlock Shot Defender weapon
Finish the Sana Yemen mission with a time less than 3:40.
Unlock SMAW rocket launcher weapon
Shoot all the small warheads in Mission 4-3.
Unlock Trapped In The Hornets Nest
Get all Combat Sharp Shooter patches.
Unlock UNP.45 weapon
Successfully finish training mission three without wasting a shot.
