Here is the full list of all 51 Spec Ops: The Line trophies - there are 42 bronze, 5 silver, 3 gold and 1 platinum.
Unlock all Trophies.
Complete game on "FUBAR" difficulty.
Follow your orders.
Play it smart.
Complete three chapters in a row without being killed or reloading a checkpoint.
Complete any chapter with 60%+ accuracy without dying or reloading a checkpoint.
Stun an enemy by dumping sand on their head. (campaign only)
You are relieved.
Live and let live.
Live and let die.
Complete game on "Suicide Mission" difficulty.
Complete game on "Combat Op" difficulty.
Complete game on "Walk on the Beach" difficulty.
Carry on, soldier.
The end of the line.
Recover all Intel Items.
Choose restraint.
Choose vengeance.
Get out of here!
Stand united.
Save a bullet.
Show mercy.
Kill 350 enemies with any rifle. (campaign only)
Kill 150 enemies with any heavy weapon. (campaign only)
Buck the chain of command.
Play it loose.
Recover 12 Intel Items.
Face the horrors of war.
Kill an enemy by tagging him with a sticky grenade. (campaign only)
Kill an Edged Weapon Expert while he is up to 5 meters away. (campaign only)
Kill 50 enemies using only the Attack Command. (campaign only)
Kill 50 enemies with any sniper rifle. (campaign only)
Engineer an exit strategy.
Kill 250 enemies with headshots. (campaign only)
Kill 10 enemies while they use zip lines or are rappelling. (campaign only)
Kill 50 enemies with grenades. (campaign only)
We have contact.
Kill 75 enemies with any shotgun. (campaign only)
Kill an enemy just as they are throwing a grenade. (campaign only)
Look out below.
Kick an enemy by vaulting over a cover. (campaign only)
Kill 5 enemies using blind fire. (campaign only)
Kill 4 enemies with a shotgun in 10 seconds or less. (campaign only)
Kill 3 enemies with a single grenade. (campaign only)
Kill 100 enemies with any pistol or SMG. (campaign only)
What's lost is found.
Blow up 10 explosive objects, killing at least one enemy each time. (campaign only)
Sprint into cover 10 times while under fire. (campaign only)
Hit 10 enemies with your melee attack. (campaign only)
Recover one Intel Item.
Kill an oryx. (campaign only)