Full list of all 77 Sniper Elite 3 achievements. It takes around 60-80 hours to unlock all of the achievements in the base game on Windows.
The base game contains 51 achievements, and there are 6 DLC packs containing 26 achievements.
Complete the campaign in co-op
Complete the game on Cadet difficulty
Complete the game on Marksman difficulty
Complete the game on Sniper Elite difficulty
Complete the game on Authentic difficulty
Incapacitate 2 vehicles in Kasserine Pass within 5 seconds (Mission 6)
Kill 10 snipers before they see/shoot you
Get a kill with each offensive item
Kill 10 enemies with flint-triggered detonations
Hold breath for one hour
Complete Mission 8
Create and save 4 loadouts
Own Sniper Elite, Sniper Elite V2 and Sniper Elite 3
Throw an enemy off one of the bridges (Mission 8)
Complete Mission 7
Kill 20 enemies by shooting explosives
Get 30 kills from sniper nests
Get 20 chain reaction explosive kills
Find half of the war diaries
Complete Mission 6
Distract 20 enemies with flint or rocks
Complete Mission 5
Relocate 100 times
Attain a rank of Sergeant (level 11)
Complete Mission 4
Get a testicle-shot from over 100m away
Complete Mission 3
Find and kill the visiting General (Mission 3)
Complete Mission 2
Complete a mission after losing over 500 units of health
Customize 1 rifle
Complete Mission 1
Find all the war diaries
Find all the collectible cards
Find all the Sniper nests
Complete all the long shots
Complete all the optional objectives
Complete 100% of the campaign on any difficulty
Play 1 mission in each mode (campaign, challenges, competitive multiplayer)
Clear the mountain pass without alerting the enemy (Mission 1)
Hide a body in each of the wells in Gaberoun (Mission 2)
Get to the informant without being spotted (Mission 4)
Make the target officer's death look like an accident (Mission 5)
Destroy all 3 bomb dumps at the same time (Mission 7)
Attain a rank of Second Lieutenant (level 31)
Complete a campaign mission without being seen (excluding Tobruk)
Play 10 competitive multiplayer matches
Tag 100 enemies or vehicles
Snipe enemies over a cumulative distance of a double marathon
Complete all the challenge missions
Earn 1 of every ribbon in competitive multiplayer
Shoot and kill the target
Kill the target with a chain reaction
Kill the target by shooting nearby explosive barrels
Kill the target in the vehicle by shooting its weakspot
Kill the target with a grenade
Shoot the target in his car
Observe the target and correctly choose to leave or kill
Crush the target with a bell
Kill the target in 7 different ways
Kill the officer at the meeting with a testicle shot
Complete 'In Shadows'
Get to the command tent unseen and without killing
Complete the mission without using any healing items
Complete 'Belly of the beast'.
Destroy all the Teufelsfeuer shipments in the truck depot.
Hit all the targets on the shooting range.
Kill the Teufelsfeuer soldiers in the coliseum.
Eliminate a sniper with a stealth takedown.
Complete 'Confrontation'.
Spot and destroy 4 enemy traps without triggering them.
Snipe the soldier in the tower far, far away.
Blow up the soldier in the distant tower using heavy artillery.
Take out two of the AA gun crews with special explosive events.
Find and set up the MG42.
Find and shoot the 10 hidden explosives (Shooting Range).
Earn Gold on all ranges (Shooting Range).