Here is the full list ribbons you can unlock in Online Multiplayer in Resistance 3 for the PS3.
Accomplice – Get the most assists in a game
Blackout – Deal 500 damage to the reactor
Bloodbath – Kill six players with less than four seconds between each kill
Bounty Hunter – Kill a player on a six to ten kill streak
Charged Up – Get five kills in a row with the Atomizer
Chilled Out – Kill five frozen enemies in a row
ComSat – Get five Radar kills/assists in one life
Defender – Kill a player near any of your objectives
Denied – Kill a player who is about to get a Berserk
Double Kill – Kill two players with less than four seconds between each kill
Dream Crusher – Kill a player on a five or less kill streak
Eagle Eye – Get five kills in a row with the Deadeye in one life
Epidemic – Get twenty kills without dying
Eradicate – Kill eight players with less than four seconds between each kill
Exterminate – Kill 10 players with less than four seconds between each kill
Fire and Forget – Your turret got a kill
Flawless – Get thirty kills without dying
Great Wall – Block 350 points of damage with your Bubble Shield
Head Shot – Get a Headshot kill
Healer – Heal 200 HP in one life
Infected – Get five kills in a row with the Mutator in one life
Infiltrator – Capture three locations in a row in a game of Chain Reaction
Knocked Out – Melee kill five players in one life
Maniac – Get ten kills without dying
Marked – Get five kills in a row with the Marksman in one life
Massacre – Kill seven players with less than four seconds between each kill
Nemesis – Kill the same player three times in a row
Nothing Left – Get five kills in a row with the Wildfire in one life
Obliterate – Kill nine players with less than four seconds between each kill
Point Blank – Get five kills in a row with the Rossmore in one life
Postmortem – Kill a player while you are dead
Primarch – Get the highest score in the game
Retribution – Kill a player who just killed you
Savior – Kill a player attacking a teammate
Serial Kill – Kill four players with less than four seconds between each kill
Shield Breaker – Destroy an Assault Shield, Auger Shield, or Bubble Shield
Slaughter – Kill five players with less than four seconds between each kill
Spectre – Get the most kills with the fewest deaths in a game
Spotter – A teammate killed someone you spotted
Strategist – Earn the highest kill streak in a game
Supplier – Resupply 200 rounds of ammunition with the Ammo Beacon in one life
Surge – Deal 500 damage to a node
Tag You’re It – Get five kills in a row with the Bullseye in one life
Trigger Happy – Get the first kill in a game
Turkey – Capture three flags in a row
Underdog – Kill a player who has mutated or has Combat Armor
Vandal – Destroy an enemy deployable (Ammo Beacon, Decoy, Heal Beacon, or Turret)
