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