Here is the full list of all 50 Wolfenstein: The New Order achievements worth 1,000 gamerscore.
Complete game on any difficulty
Complete game on I AM DEATH INCARNATE! (or ÜBER)
Unlock assault perk 6
Release friend
Unlock assault perk 8
Defeat the London Monitor
Unlock tactical perk 8
Locate the underwater stash
Unlock tactical perk 3
Unlock stealth perk 2
Unlock assault perk 1
Unlock tactical perk 1
Choose to save Fergus
Unlock demolition perk 1
Unlock stealth perk 1
Save allied planes
Choose to save Wyatt
Locate the resistance
Find the Laserkraftwerk
Complete game on ÜBER
Collect 25 gold items
Collect all gold items
Collect all letters
Solve the first Enigma code
Solve the second Enigma code
Solve the third Enigma code
Solve the fourth Enigma code
Unlock stealth perk 3
Unlock stealth perk 4
Unlock stealth perk 5
Unlock stealth perk 6
Unlock stealth perk 7
Unlock stealth perk 8
Unlock tactical perk 2
Unlock tactical perk 4
Unlock tactical perk 5
Unlock tactical perk 6
Unlock tactical perk 7
Unlock assault perk 2
Unlock assault perk 3
Unlock assault perk 4
Unlock assault perk 5
Unlock assault perk 7
Unlock demolition perk 2
Unlock demolition perk 3
Unlock demolition perk 4
Unlock demolition perk 5
Unlock demolition perk 6
Unlock demolition perk 7
Unlock demolition perk 8