Here is the full list of unlockable trophies in Resistance 3 for the PS3.
Access Denied (Bronze) – Absorb 1000 damage with Auger Shields
Archivalist (Silver) – Collect all journals
Backstabber (Bronze) – Kill 20 enemies with melee while they are idle
BARF! (Bronze) – Make 6 Wardens puke at the same time in the prison
Bloodborne (Bronze) – Kill 3 enemies simultaneously using a single mutated body
Body Count (Bronze) – Kill 1000 enemies
Bookworm (Bronze) – Collect 50% of the journals
Boomstick (Bronze) – Use the upgraded Rossmore secondary fire to set 6 enemies on fire at once
Bouncer (Bronze) – Keep Chimeran forces from entering the Brewpub
Brutal (Gold) – Complete Campaign Mode on Superhuman
Buckshot (Bronze) – Kill 2+ enemies with one Rossmore blast
Bull in a China Shop (Bronze) – Freeze and melee kill 3 Ravagers
Calm Under Pressure (Bronze) – Defeat the Brawler in the Post Office in under 2 minutes
Chamber Full of Death (Bronze) – Kill 5+ Hybrids at once by using the HE .44 Magnum secondary fire
Cheap Shots (Bronze) – Kill 25 enemies firing the Auger through an object
Collector (Bronze) – Collect 10 journals
Corpse Wagon (Bronze) – Detonate fallen Leeches to kill 25 enemies
Counter-Sniper (Bronze) – Use the Deadeye to kill 20 snipers
Electric Avenue (Bronze) – Use the EMP to take down 25 drones
Expert Sniper (Bronze) – Get 50 headshot kills in Campaign Mode
Feeling Lucky, Punk (Bronze) – Detonate multiple Magnum rounds to kill 2+ enemies at once, 5 times
Fireworks (Bronze) – Use the Wildfire secondary fire to kill 6 enemies in one shot
Frickin’ Laser Beams (Bronze) – Get to the first mineshaft without being hit by sniper fire in Mt. Pleasant, PA
From the Hip (Bronze) – Kill 50 enemies with the Bullseye or Marksman while moving, without using zoom
Gardener (Bronze) – Destroy 100 blast roots
Good Fences (Bronze) – Don’t allow any counter-attackers into the Washington Square base
Grasshopper Unit (Bronze) – Kill 5 Longlegs in mid-jump
Grenadier (Bronze) – Kill 3 or more Military Chimera with a single Grenade
Hello Driver (Bronze) – Kill 5 drivers without destroying their vehicle
Helping Hands (Bronze) – Revive a Co-op partner 20 times
In This Together (Bronze) – Defeat the Widowmaker in Times Square without killing a single Hybrid
Irresistible Force (Silver) – Complete Campaign Mode on any difficulty
Juggler (Bronze) – Simultaneously burn, freeze and poison 4 separate enemies
Land, Sea, and Air (Bronze) – Travel in 3 different vehicles on your journey
Master Mechanic (Silver) – Fully upgrade all weapons in Campaign Mode
Medusa (Bronze) – Freeze 5 enemies at once and destroy them with a blast of the Cryogun’s secondary fire
No Escape (Bronze) – Destroy all Warden vehicles in the Motorpool
Nothing But Net (Bronze) – Score a basket by lobbing a grenade through a basketball hoop
One Eyed Jack (Bronze) – Find and kill ‘Jack’ in Graterford Prison
Opportunity Knocks (Bronze) – Kill 20 enemies with environmental objects
Overload (Bronze) – Use the EMP to take down 10 Steelhead Auger shields
Platinum Trophy (Platinum) – Obtain all Gold, Silver, and Bronze trophies in Resistance 3
Raining Limbs (Bronze) – Kill 25 Grims using only grenades
Roops! (Bronze) – Knock a Hybrid off the cliffs in Mt. Pleasant, PA
Sandman (Bronze) – Kill 5 Grims in a row using only headshots
Shoe Leather (Bronze) – Travel 30 km on foot
Short Out (Bronze) – Defeat the Stalker in under 60 seconds
Silent Partner (Silver) – Damage the same enemy in Cooperative Mode for 100 kills
Slaybells (Bronze) – Make Santa and his reindeer fly
Snipe Hunt (Bronze) – Collect all Deadeye rifles without dying while fighting the Widowmaker in St. Louis
Tag, You’re It (Bronze) – Kill 40 Bullseye tagged enemies
This is my Rifle (Bronze) – Fully upgrade one weapon in Campaign Mode
Toast (Bronze) – Use the upgraded Deadeye secondary fire to kill 2+ enemies, 5 times
Up Your Arsenal (Bronze) – Get a kill with every weapon in your arsenal
Vehicular Manslaughter (Bronze) – Destroy 10 Warden vehicles while on the train
Warp Speed (Bronze) – Use the Atomizer secondary fire to kill 30 enemies
Waste Not (Bronze) – Get 5 headshot kills with one Deadeye clip
Weaponsmith (Bronze) – Upgrade 5 weapons in Campaign Mode
Zookeeper (Bronze) – Kill the Brawler in Haven without taking any damage