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