Mission: Semper Fi (Eight of Hearts)
Effect: Headshots cause enemies to explode
Location: At the very beginning after leaving the shack, you will see another shack to the right. The card is inside.
Mission: Little Resistance (Four of Clubs)
Effect: Enemies take less bullet damage
Location: At the end of the mission before going into the last building, look to the right. The card is in a corner of bushes.
Mission: Hard Landing (King of Hearts)
Effect: Fire explosive pistol rounds while downed
Location: About halfway through the mission you will see a big building with a mini-trench outside. Enter the building, and go into the lower level. The card is to the right when you go into the room with the stairs.
Cold Dead Hands
Mission: Vendetta (Five of Diamonds)
Effect: Enemies take their weapons with them to the grave
Location: After the sniper section at the first part of the mission, Reznov will lead you through a building. Follow the bar around to the end to find the card.
Sticks & Stones
Mission: Their Land, Their Blood (Joker)
Effect: Your weapon arsenal consists of a knife and rocks
Location: Destroy the tanks, and go through the barn. Search the stalls to your right to find the card.
Mission: Burn 'em Out (Queen of Hearts)
Effect: Can only recharge your health by getting kills
Location: Just before the second mortar position is a bunker to the left. The card is inside.
Mission: Relentless (Nine of Diamonds)
Effect: Enemies take less explosive damage
Location: At the end of the mission, take either the left or right path. Eventually the paths will reconnect. The card is about halfway down the path.
Mission: Ring of Steel (Jack of Spades)
Effect: Enemies die by headshot only
Location: Enter the asylum, the immediately go to the left. The card is in the far bottom left corner.
Mission: Eviction (Ace of Spades)
Effect: Enemies come back from the dead
Location: During the first half of the mission, just after the kitchen area, you will eventually see a room to your right that has a large hole in it. Drop down to find the card.
Mission: Blowtorch & Corkscrew (Ten of Clubs)
Effect: Shoot downed Co-op teammates to revive them
Location: Go to the left as you move toward the second bunker. A Japanese soldier hanging upside down is near the card.
Mission: Breaking Point (Three of Diamonds)
Effect: Get three kills in five seconds to become Berserk
Location: Clear all four mortar pits, then go to the small shack in the south of this area. The card is inside.
Mission: Heart of the Reich (Six of Clubs)
Effect: Paintball guns
Location: The card is in the closed-off subway entrance across the street from the start of the mission.
Mission: Downfall (Two of Spades)
Effect: Limits your HUD, turns on friendly fire, and bleed out in half the time
Location: Before you get to the theater, some of your allies will break through a door to your right. The card is past that door.
# Multiplayer kill streak bonuses
Kill the indicated number of enemies in a row in Multiplayer mode to get the corresponding bonus:
3 enemies: Recon plane displays enemies on your team's radar.
5 enemies: Artillery strike that can be placed anywhere on the map.
7 enemies: Send out an angry pack of dogs against the enemy.
# Extra ammunition
Use the following trick if run out or are running low on ammunition on any mission in Solo mode on any difficulty. Find a non-essential teammate (someone not involved in the story line). Walk up to him, and aim the reticule next to his head or torso. Knife the air, and as you do so move slightly towards them so that the reticule is over them. If done correctly, he should die and drop his weapon. Non-essential teammates will get replaced when you walk into a battle. If the teammate does not die but keeps getting back up, they are essential to the story (for example, Sgt. Roebuck and Sgt. Rezenov).
# Hide among the dead in Multiplayer mode
Find some dead bodies. Run up to them, and make sure no one else is around besides your teammates. Get down into a laying position. Then, crawl into what appears to be the body of the dead person, so it looks like there are fragments of the body around your HUD. Lower your gun, but have it high enough to still see what is coming. This trick will make it harder for people to see you unless they are paying close attention to the ground. The flaws to this trick are that people can sneak up from behind and see you, and you can only see in one direction without moving. After a few kills, move to another location because other players will pick up on your trick and grenade or rush you.
# Easy money in Nacht Der Untoten
For the first few rounds, let all the zombies break down the boards and come inside. Then, use your pistol or knife to kill them to get more points than simply shooting them once in the head. A knife to the head will earn 130 points per kill. Once all of the zombies are dead, patch up the boards. You will have much more money than if you simply killed them as they approached. Note: After level 3, the zombies are too powerful to be taken down this way.
# Preparing for next round in Nacht Der Untoten
At the end of each round, do not kill the last zombie. Kill all of the others, but allow one to live. When it has entered the building, throw a grenade at it to blow off its legs. It should now crawl slowly on the ground, leaving you plenty of time to patch up any necessary windows. The next round will not begin until you kill him. He is easy to evade. Use this opportunity to prepare for the next round. When you are ready, kill him to end the round.
# Hidden radio music in Nacht Der Untoten
Start any type of Nazi Zombie game, and unlock the door to the Mystery Box room. Go to the Mystery Box. Go over to the right, and look at a table to find a radio. Shoot a bullet at the radio. After a few seconds, you will hear random types of music such as rock, disco, opera, and some in-game music such as the Russian victory song, the final mission music, or the Japanese combat music. The music will stop in between rounds but will then start again. Every player in game should hear it.
# Sniping locations
In the middle of the map is a two story concrete building. Place satchels or Bouncing Bettys to protect your location. There is also a large white estate with a ladder and staircase in front of it that can be used as a sniping location.
There are many good sniping positions on this map. The first is a small room overlooking the garden and the front staircase. To get to this room, either climb the ladder or go up the stairs. The second location is a small room that has a clear line of sight into the room mentioned above. To get to this room, go to the bottom of the map, and climb up the staircase. You should be on a wooden porch that connects to the gardens. Turn left, and you will be in the room.
There are two concrete bunkers in this map. Go to the one on the edge of the cliff. From this room, you can snipe players as they run by and also shoot them trying the get in from behind.
At the end of the courtyard, go into the shack, and turn right. Use the portion of wall that is jutting out to hop into the tree.
There is a platform with a ladder on the side of the building. To get to this platform, you can either climb the ladder or go up the stairs inside. This spot connects to a ledge inside the building.
There is a bunker/cave in the upper left corner of the map (second row of buildings). This bunker has a clear shot of enemy respawn points and has good protection from tanks. Make sure to use Bouncing Bettys to protect yourself.
On the second floor of the hangar is a small room. From the outside, you can get to it by climbing up the rubble pile on the side of the building.
Go to the porch outside the hanger entrance. Close to the hanger is a large white carved stone. Jump on it, and try and hop over the fence. You will fail, but will land on the fence.
Go to the circular building, and look through the stair entrance. There should be a hut with two rectangular windows overlooking the sandy area that can be used as a sniper position. Also, there is a tall building on the water with windows overlooking the entire map that can be used.
Once inside the church tower, look through the circular window. There is a white building with a small balcony in the distance. Use it to snipe from.
There is a platform/hallway that goes over the middle of the map. To get to it, go behind the trashed locomotives. Climb up the staircase, and turn left at the round platform. You should have a good view of the whole roundhouse in the middle of the map.
Towards the top of the map is building with two windows that overlook the whole area. Note: Other players will try to get you.
Go into the house next to the burning house. Stand on a windowsill, and face the side. You should fall on a ledge below.
Enter the burning house. Go up the steps and out the window in the same way to hit a ledge below.