Easy "Annette saved" and "Kessler saved" achievements or trophies
You can only choose to save either Kessler or Annette in a particular playthrough. Depending on your choice, the end of the chapter will vary slightly. During Chapter 6, you will be given the choice to go left or right, with each direction giving you the chance to jump in a hole.
To save Annette, choose the left path. You will fight Nazis before saving Annette from zombies and watch the death of Kessler.
To save Kessler, choose the right path. You will fight Nazis in a chop shop before saving Kessler from zombies and watch the death of Annette. Kessler plans to drop flyers over Berlin, which will would lead to his arrest and execution.
Easy "Armor upgrade I" Achievement
Collect 100 German helmets. Taking them from corpses will count towards your total.
Easy "Armor upgrade II" Achievement
Overcharge your armor to 200 by picking up armor kits, helmets, and bulletproof vests.
Easy "Bombenschuss clip upgrade" Achievement
Get fifty kills with the Bombenschuss.
Easy "Carry heavy machinegun" Achievement
You must get 100 kills with the MG-46, which can be found very frequently throughout the game. You can detach it to get more kills. Re-attaching it will reload the gun.
Easy "Docks nightmare" Achievement
During Chapter 2 you will travel on a boat to a dock at the end of the electric line. Once there, open the gate to progress. Afterwards, get in the second boat to reach a floodgate. The nightmare bed can be found there.
Easy "Eagle Eye" Achievement
Get twenty silent commander kills.
Easy "Escape! Nightmare" Achievement
In Chapter 4, after meeting Annette in the tavern, notice the stairs directly to your left. The nightmare can be found on the upper floor.
Easy "German Alps nightmare" Achievement
When you check in your passport and have the conversation with Jäger, look at the other control point, which is closed. Take the key from it. A short distance ahead is a locked gate to your right. Use the key, then go downstairs to find the nightmare.===Easy "Health upgrade I" Achievement=== Overcharge your health to 200 by collecting health kits.
Easy "German Alps nightmare" Achievement
When you check in your passport and have the conversation with Jäger, look at the other control point, which is closed. Take the key from it. A short distance ahead is a locked gate to your right. Use the key, then go downstairs to find the nightmare.
Easy "Grenade belt" Achievement
Play Chapter 2 and progress to the point where you have to open the gate just before the end of the chapter. It is easy to get the required kills there.
Easy "Health upgrade II" Achievement
Overcharge your health to 250 by collecting health kits.
Easy "Health upgrade III" achievement
You must get a five kill streak while being overcharged. Consider doing this at the end of Chapter 4. After meeting Annette, she will bring you to a tavern with multiple ammo, health, and armor collectibles. After hiding them in the cellar, an assault will start. Overcharge yourself and use the grenade-launcher.
Easy "Kampfpistole ammo storage upgrade" Achievement
Get fifty kills with the Kampfpistole single shot grenade pistol.
Easy "Prison nightmare" Achievement
In Chapter 1, sneak out of your cell and avoid the guards to enter the sewers under the dog kennels. Search for Wesley/Agent One in the main prison room. Use the trap door on the floor to get to the ground floor. Then, turn back to start the nightmare in the bed behind you.
Easy "Quick turn" Achievement
Get fifty kills from cover.
Easy "Reload mash" Achievement
Get fifty kills using the last bullet of your clip. Consider doing this in stealth, using a silenced handgun. Shoot nine bullets into a wall, then use your final round to headshot a guard.
Easy "Ruins nightmare" achievement
At the start of Chapter 6, after clearing the first dock and jumping into the river to reach the second wooden dock, there will be a niche to your left. The nightmare can be found between two barrels at that niche.
Easy "Schockhammer clip upgrade" Achievement
Get 50 kills with the Schockhammer shotgun.
Easy "Vampire" Achievement
Perform twenty five enemies using stealth kill takedowns.
Easy "Wolfenstein Keep nightmare" Achievement
In Chapter 3, progress past the dining room suite. Open the trap door with your crowbar. Hop over the fence to discover a hidden area with the third nightmare.
Easy "Wulfburg nightmare" Achievement
In Chapter 5, just before entering Agent Two's house, notice the alley to your left. The nightmare can be found at the end of it.
Goldene Pistole option
Collect all 64 gold items. Then, enter the "Options" menu and enable the ""Goldene Pistole" selection to play with golden guns.
The Elder Scrolls 5: Skyrim reference
During the "Prologue" level you can find a Dragonborn helm from The Elder Scrolls 5: Skyrim sitting on some boxes in a storage area.
Various Achievements
Complete the following achievements to unlock Microsoft Gamerscore points.
Achievement
How to unlock
All that glitters (20 points)
Collect 8 gold items.
Ammunition upgrade (20 points)
Unlock the Ammunition upgrade perk.
Annette saved (20 points)
Choose to save Annette.
Armor upgrade I (20 points)
Unlock the Armor upgrade I perk.
Armor upgrade II (20 points)
Unlock the Armor upgrade II perk.
Bathhouse combat master (20 points)
Achieve gold medal for this challenge map.
Bombenschuss clip upgrade (20 points)
Unlock the Bombenschuss clip upgrade perk.
Cable car platform combat master (20 points)
Achieve gold medal for this challenge map.
Carry heavy machinegun (20 points)
Unlock the Carry heavy machinegun perk.
Caves combat master (20 points)
Achieve gold medal for this challenge map.
Die, Grösse, die! (20 points)
Complete all nightmare levels.
Docks nightmare (20 points)
Complete the nightmare in chapter 2.
Eagle Eye (20 points)
Unlock the Eagle Eye perk.
Escape! nightmare (20 points)
Complete the nightmare in chapter 4.
Freedom (20 points)
Escape Castle Wolfenstein.
German Alps nightmare (20 points)
Complete the prologue nightmare.
Glittering gold (20 points)
Collect 16 gold items.
Gold master (20 points)
Collect 64 gold items.
Graveyard combat master (20 points)
Achieve gold medal for this challenge map.
Grenade belt (20 points)
Unlock the Grenade belt perk.
Guten tag! (20 points)
Complete the nightmare boss level.
Health upgrade I (20 points)
Unlock the Health upgrade I perk.
Health upgrade II (20 points)
Unlock the Health upgrade II perk.
Health upgrade III (20 points)
Unlock the Health upgrade III perk.
Hero (20 points)
Complete game on any difficulty.
Kampfpistole ammo storage upgrade (20 points)
Unlock the Kampfpistole ammo storage upgrade perk.
Keep foyer combat master (20 points)
Achieve gold medal for this challenge map.
Kessler saved (20 points)
Choose to save Kessler.
Old town nightmare (20 points)
Complete the nightmare in chapter 7.
Paderborn bridge combat master (20 points)
Achieve gold medal for this challenge map.
Paperboy (20 points)
Collect 5 letters.
Postman (20 points)
Collect all letters.
Prison docks combat master (20 points)
Achieve gold medal for this challenge map.
Prison nightmare (20 points)
Complete the nightmare in chapter 1.
Quick turn (20 points)
Unlock the Quick turn perk.
Reload mash (20 points)
Unlock the Reload mash perk.
Research centre combat master (20 points)
Achieve gold medal for this challenge map.
Revenge (20 points)
Complete part one.
Ruins nightmare (20 points)
Complete the nightmare in chapter 6.
Schockhammer clip upgrade (20 points)
Unlock the Schockhammer clip upgrade perk.
Super hero (20 points)
Complete game on I AM DEATH INCARNATE! (or ÜBER).
The ecstasy of gold (20 points)
Collect 32 gold items.
Tough Skin (20 points)
Unlock the Tough Skin perk.
Undercover (20 points)
Infiltrate Castle Wolfenstein.
Vampire (20 points)
Unlock the Vampire perk.
Wolfenstein Keep nightmare (20 points)
Complete the nightmare in chapter 3.
Workshop combat master (20 points)
Achieve gold medal for this challenge map.
Wulfburg nightmare (20 points)
Complete the nightmare in chapter 5.
Wulfburg square combat master (20 points)
Achieve gold medal for this challenge map.
Über hero (20 points)
Complete game on ÜBER.
Wolfenstein 3D references
All nine chapters from the "Episode 1: Escape from Wolfenstein" part of Wolfenstein 3D are hidden in the nine Nightmare levels in "Wolfenstein: The Old Blood". In each Wolfenstein: The Old Blood chapter, search for a secret room with an empty bed, a light, and a Wolfenstein 3D poster. Walk up to the pillow on the bed to display a "Nightmare" message. Hold [Action] to activate the bonus level, which is that level from the classic Wolfenstein 3D. After dying in the bonus level, you will wake up again in the bedroom you started the bonus level from. You can replay any Nightmare level. As soon as you wake up from a Nightmare, you will be able to go back to bed and enter the Nightmare again.
During the "Prologue" level you can find a poster featuring a scene from Wolfenstein 3D
Wolfenstein 3D secret level
Start the first Nightmare level from Wolfenstein 3D. Go to the end of floor 1 to a room where the floor 2 elevator is located. Turn right and search the wall to find a hidden room. Search the walls inside the secret room to an elevator that can be used to reach secret level 10, "Floor 10".
