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