Here is the full list of all 50 Wolfenstein: The New Order achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Solve the fourth Enigma code
Solve the third Enigma code
Collect all gold items
Collect all letters
Solve the second Enigma code
Complete game on any difficulty
Complete game on I AM DEATH INCARNATE! (or ÜBER)
Complete game on ÜBER
Unlock tactical perk 7
Unlock demolition perk 7
Unlock demolition perk 6
Unlock demolition perk 5
Unlock demolition perk 4
Unlock demolition perk 8
Unlock tactical perk 6
Unlock demolition perk 3
Unlock stealth perk 6
Unlock assault perk 5
Unlock assault perk 8
Unlock tactical perk 5
Unlock stealth perk 8
Unlock assault perk 7
Unlock stealth perk 4
Solve the first Enigma code
Unlock tactical perk 4
Unlock assault perk 3
Unlock assault perk 2
Choose to save Fergus
Release friend
Defeat the London Monitor
Unlock demolition perk 2
Unlock assault perk 6
Unlock tactical perk 8
Unlock assault perk 4
Collect 25 gold items
Locate the underwater stash
Unlock stealth perk 3
Find the Laserkraftwerk
Unlock stealth perk 7
Locate the resistance
Unlock tactical perk 3
Unlock assault perk 1
Unlock stealth perk 5
Unlock tactical perk 2
Choose to save Wyatt
Unlock stealth perk 2
Unlock tactical perk 1
Unlock stealth perk 1
Unlock demolition perk 1
Save allied planes