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