1.So the first secret is in the bottom of the first tower.You will find a planks and Munitions sigh.Break it.You will find some ammo for Mauser Rifle.
2.Next secret located in the barracks(in the lower courtyard).Just shoot the floor to find some gold.
3.In the tower(near the rooftop) you will find a radio room with binoculars in it.Shoot the board near alarmbox to get the gold.
4.When you will jump in the lower castle(through the breakable floor) you will see a breakable wall on your back. Secret room here.
5.In the lower castle you will find fireplace room(its on your right).You need to use wall candle.Wall behind fireplace will open.Gold is yours.
6.When you come to big room(in the lower castle) shoot the Hitler portrait for gold.
7.Near the end of level you will find two panels. Use left one and the other one will open.

1.The first secret located in the first room on your right(with the officer in here).Just look at the screenshots.
2.This is actually not a secret. But some people doesnt notice it.It is a kind of mini-secret.
To open the gate in the first room(where you found 1st secret) you need to find this switch.(its in the radio room near the alarmbox).
3.Second mini-secret located in the baracks room(opposite the radio room).Just open the locker and get your ammo.
4.On your way in the lower castle after the big stairs on your right you will see a room and a sigh Weinkeller near it. There is button between two kegs.Use it and secret room will be revealed.Wine is yours.You can use it to heal btw.
5.In the lower castle you will find a room with a officer and food on the table.Shoot the board to get your gold.
6.Also in the same location you will see a door with the red light.Go there,shoot the barrel,loot the secret room.

No secrets here.Lets move on.

1.When you will pass under the bridge go into the right door.Then go left and you will find a room with a big bookcase in there.You need to find the useable book and open the secret room.
2.When you come to a courtyard with two big trees in it look for a balcony that you can jump on.Just take a look on that screenshot.

1. The secret is on the catwalk, left of the "T", but the button to open it is in the crypt roomnext to where you entered . You have to be quick, and after hitting the stone button,because door will close after some time. Remember the signs on the wall.

1.At one of the halls(where nazis shooting the flame zombie) you will find a big cross. Shoot it.It will fall and make a hole in the floor. It is a secret area.
2.When you come to a lower hall with traps you need to pass the raps in the right order.Remember that signs from the past level?They will help you.When you done you need to stand on a platform that will get you on the top floor.Two zombies will come out of the doors.And behind them you will find your reward.

1.The secret is on the top floor,on the right to altar.You just need to jump.

No secrets here.Lets move on.

1. In the last compound(with big tower) you will find a big building with locked door. But you still can get into it.You need to get onto compound wall.(use boxes nearby).Then you need to reach nearby building rooftop and using wire connecting two buildings you will reach your target. Jump into the hole in the rooftop and get your loot.

1.After falling bridge you will come to big room with stairs.Under the table on your right you will find a button(its really hard to see).Then you need to destroy one of the board.If you dont get it see the screenshot.

1.While cleaning out buildings, you will find a machine room. There is vent exit. Break it and go through the vent.You will find secret area.
2.Also there is some gold in the radio room. But it is not a secret.

No secrets here. Lets move on.

1.When the tank blow the doors you will enter a big building with the sewers exit. Before jumping there check out the second floor of the building.You can reach it by climbing girder.

No secrets here.Lets move on.

1.In the start of the level from the rooftop you can notice a train and the building near it. Just climb on this building and jump no the train.
2.In the warehouse you need to jump on the platform.You can move it for sure.

1.In the begining of the level on you left you will see gas canisters. Shoot it.
2.When you reach champers with lopers in the right one there is breakable wall.Behind it you can find some ammo and healthpacks.
3.When you find area with water in the center jump into it and break the grate behind the pipes.Swim through and you will find valve.Turn it.
4.After you done third secret,there will be water in some areas.Now you can reach fourth secret.
See screenshot.

1.When you enter the base you will notice house on your right.Go behind it and you will find a secret passage.

1.When you come to a room with water, jump into it.You need to follow metal doors. It is a long swim but there is many airspots.

No secrets here.Lets move on.

1.When you will be inside the dam you will find elevator.Press the button but send the elevator alone. You will see there is secret passage under it.

1.In one of the building you will find half-naked woman. In the same room you can find chest near the bed. Break it and take the gold.
2.In the L shaped hall that breaks up the first and next street section you'll see a small, locked door. Shoot the lock.
3.On the street you will notice a sniper in the window.Kill him and use pipe to climb into the window.
4.In the house of one of your targets you will find a switch behind the picture. It opens secret room behind you.
5.In wine cellar you can find keg with 3D stopper. Use it to open secret room.

1.In the first big room of the chateau shoot the Hitler picture over the fireplace.You will see shootable button.It opens door on the left side of the big stairs in the main hall.
2.After the library you can see another fireplace. There is hidden switch. Use it to move fireplace.

1.On your way you will notice building near the graveyard. Floor of this building is breakable. Secret area is under this house.

1.In the start of the level you will find big bridge. Climb on right side of this bridge. On your right you will see small secret cave with gold.
2.In the end of the level(before jumping into the broken floor) you will see destroyable barrel. Shoot it.

1.Under some stairs you will see a skeleton behind bars.
2.In the courtyards you will notice damaged areas, and one leads to a secret.See screenshot.

This is ending level.No secrets here.
My guide ends here too.Thanks for reading.I hope it helped you.