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