Run to the end of the passage and open the door.

Goodies:
Climb down to the water and swim to the next ladder. Climb out and break the box to find MP 40 Ammo. Swim back to the previous jetty.

Run up the stairs and try to avoid being seen by the guy.
On the right is a closed door.
Run to the left, use the chamber with the two doors if necessary to avoid being seen.
Kill the guy before he can trigger the alert. Collect his Mauser.
If he (or anyone later) triggers the alert, some guys with flamethrowers will appear, one right here and two at the alert switch.
Run up the stairs.

A bit further along to the left you can find the alert switch, turn it off if the alarm is on. Kill flamethrower guys if necessary.
Look over to the left and see a guy patrolling there.
Run over to him when he goes to the left and kill him.
Enter the room to find some MP40 Ammo.
Get back to the boxes.

Goodies:
By the last stairs, climb onto the crates in the alcove. Jump onto the next level on the right. Break the crate and collect the medikit. Climb back down.

Now run towards the alert switch.

Idol:
Open the door right of it. Walk up and kill the guy there before he can trigger the alarm. Do not break the window as this might attract more guys. Unless you killed the one patrolling on the other side.
Collect his gun and the Sima Qian Shiji.

Now get back down.
Run down the left stairs and enter the room. Collect the MP40 on the table.
Get back out and run down the right stairs.
Turn right and prepare to open the door there.

Behind it is a huge area with a gangplank and a boat. There are also a couple of baddies here.

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