Here is the full list of all 35 Call of Duty: WWII achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Complete the game on Veteran difficulty.
Complete the driving portion of S.O.E. without hitting any obstacles.
Breach the seawall in under two minutes without taking MG fire.
Protect the convoy by shooting down all the planes in The Rhine.
Save 8 allies locked in struggle.
Collect all 33 mementos.
Drag 10 allies to safety.
Rescue your allies with the Sherman while keeping your armor above 80%.
Get 6 groups of enemies to surrender.
Disable 50 enemies using smoke grenades.
Request Aiello to toss you signal smoke and call in mortar strikes 10 times
Protect your tanks by shooting down all planes in Operation Cobra.
Request Turner to toss you ammo 20 times.
Cover Zussman from the church without missing a shot in Stronghold.
Request Pierson to spot enemies 25 times.
Request Zussman to toss you First Aid Kits 30 times.
Complete the campaign.
Request Stiles to toss you grenades 15 times
Complete Ambush.
Spend 3 minutes using Focus in the campaign.
Reach the sniper perch without being detected in Ambush.
Complete Battle of the Bulge.
Protect the bombers by personally shooting down 12 enemy planes.
Complete Hill 493.
Successfully escort the pole charge engineer to the pillbox in Hill 493.
Complete Death Factory.
Sneak through the Dragon's Teeth undetected in Death Factory.
Complete Collateral Damage.
Complete Liberation
Sneak through the courtyard undetected in Liberation.
Complete S.O.E.
Save 5 allies by throwing away a live enemy grenade.
Complete Stronghold.
Complete Operation Cobra
Complete D-Day.