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