Syphon Filter: The Omega Strain (PS2)

Ratings
Earned ratings come with bonus items.

• Combat Specialist
  Intermediate (300 kills): G33E
  Advanced (600 kills): FA-MAS
  Expert (900 kills): FAL
  Elite (1300 kills): C8 rifle
  
  
• Combat Knife Specialist
  Intermediate (50 kills): Stiletto
  Advanced (100 kills): Shuriken
  Expert (250 kills): IPCA Commando
  Elite (450 kills): VibroBlade
  
  
• Combat Sharp Shooter
  Intermediate (200 headshots): Dragunov
  Advanced (450 headshots): AU300 Mod-R
  Expert (750 headshots): ACR
  Elite (1100 headshots): M82 BFG
  
  
• Non-Lethal Force Specialist
  Intermediate (50 kills): E.D.T.
  Advanced (100 kills): DormaGen Gas Grenades
  Expert (200 kills): Air Pistol
  Elite (300 kills): E.P.D.D.
  
  
• Tactical Explosives Specialist
  Intermediate (100 grenade kills): M61 Frag Grenade
  Advanced (200 grenade kills): Incendiary Grenade
  Expert (350 grenade kills): Sarin nerve agent
  Elite (500 grenade kills): M79
  
  
• Team Efficiency Specialist
  Intermediate (2 multiplayer par times): M1 Super 90
  Advanced (4 multiplayer par times): Shot Defender
  Expert (6 multiplayer par times): MDSA3
  Elite (9 multiplayer par times): M-16k
  

Medals and Weapons
Medals unlock bonus weapons and items. You are also able wear medals by equipping them in the modify agent option on the 'personnel screen'.

Medal of Distinction: Beat single player mission deadline on all missions
Item: US M60 E3

Agency Medal of Valor: Earn all Agency ratings, special agency ratings, all commendations, all other medals, highest rank.
Item: M-249 SAW

Stone’s Medal of Courage: Rescue Stone Ukraine, Provide cover fire for Stone.
Item: SPA-15 Shotgun

Carthage Exemplary Service Tribute: Carthage 1 and 2: Protect CHA officers, Carthage 2: Eliminate all 4 ALA death squad assassins, Carthage 3: Rescue injured SWAT officers
Item: Spectre

Homeland Security Citation: Earn Carthage Exemplary Service Tribute and the President’s official Liberty Award. Zurich: Obtain Birchim files.
Item: FAL SG-1

Ellison Warner Award: Belarus 2: Destroy SCUD missile, Yemen 2: Destroy SCUD firing mechanism, Myanmar: Recover flight recorder
Item: Tec 45

Karkadann, Alima’s Unicorn Charm: Yemen 1: Complete all objectives, Yemen 2: Complete all objectives, Ukraine: Bring Alima Haddad to safety.
Item: Desert Eliminator .357

Republic of Korea Sevice Award: Kyrgystan: Locate Yuschenko’s papers, Yemen 1: Obtain Thae-bok Jon’s credentials, Tokyo: Upload computer data, Myanmar: Find Yong-jun Kim’s Briefcase.
Item: China type 56

South African Freedom Medal: All missions: No collateral damage, Earn Stone’s Medal of Courage, Earn Carthage Exemplary Service Tribute, Belarus 1: Escort all workers to safety, Lorelei: Rescue Level 5 salvage personnel
Item: Sweeper 12 gauge

President’s Official Liberty Award: Carthage 3: Complete DPE order on Masson, Italy: Assassinate Dimitriby the bell tower at 3:00 PM, Belarus 1: Eliminate Zhidkov, Kyrgyzstan: Poison Saydahmat’s water chalice, Myanmar: Eliminate Than Muang.
Item: DSC-1

Great Lakes Service Medal: Carthage 1,2,3: Complete all objectives, Yemen 1: Photograph Fadhil’s files, Zurich: Obtain ALA financial records.
Item: MDS-k PDW

Kinishi Kuncho: Order of the Golden Dragon: Earn Republic of Korea Sevice Award, Kyrgyszstan, Tokyo and Myanmar: Complete all objectives.
Item: SPA-12 shotgun

The Golden Cross of Russia: Belarus 1 and 2: Complete all objectives, Kyrgyzstan: complete all objectives, Yemen 1 Photograph Fadhil’s files, Minsk: Complete all objectives, Montenegro: Find evidence linking Niculescu to Syphon Filter, Ukraine: Complete all objectives.
Item: TH3 Blaster

Mossad Friend to Peace Medal: Earn Karkadann, Alima’s Unicorn Charm, Kyrgystan: Eliminate Zayed Al Dhahiri
Item: Galil SG-1

United Nations Peace Award: Cure the Omega Strain, Carthage 1: Scan tissue sample, Carthage 2: Obtain Mujari’s recorder, Belarus 1: Take tissue sample from cow carcass, take mill documents from safe, Belarus 2: Obrain sewage sample, Yemen 2: Obtain Yushchenkos viral container, Minsk: Acquire Omega Strain serum, Lorelei: Collect original virus sample, Tokyo: Obtain sample, Ukraine: Find Omega Strain DNA code
Item: C11

Commendations
Gaining commendations' will unlock special weapons:

Gray Imani: Complete all objectives in Carthage1, 2, and 3.
Item: 93R

Ehud Ben Zohar: Complete all objectives in Yemen 1 and 2.
Item: Desert Sniper .44

Mujari, Lawrence: Complete all objectives in Chechnya and Lorelei
Item: Riot Shotgun

Xing, Lian: Complete all objectives in Kyrgystan, Tokyo, and Myanmar
Item: China type 67

Stoneman, Gary: Complete all objectives in Italy, Belarus1, and Belarus 2
Item: SR-15

Powers, Maggie: Complete all objectives in Minsk
Item: CZ Mach-9

Lipan, Teresa: Complete all objectives in Zurich
Item: Gewehr G 53

Logan, Gabe: Complete all objectives in Montenegro and Ukraine
Item: Desert Express.50