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