

In the next room there are two guards (kills 10/18 and 11/18), and doors to your left and right. Go into the newly revealed area to find a machine gun and some health. After you kill him walk up to the painting of a bird on a statue and press A (use) to reveal a secret area and pop the following achievement: On the left side there is a single guard hiding in a cubby hole. Note that it looks like there are paths on the left and right.

Inside there will be wooden walls and one guard at the far end who sees you, kill him for kill 8/18.

Retreat back to the big larger room and open the door between the two wooden panels. Retreat back and open the other door to find a room with 1 guard and 1 dog. Go to the one on the right to find a room with two dogs in it, kill them both (kills 4/18 and 5/18). One at the end of the pathway to the right and one in front of you. Inside this room you'll find two guards patrolling, kill them both (kills 2/18 and 3/18). Continue on to the door at the far end & open it to find a large open room with a door between two wooden panels straight ahead, and a single door to the right between two blue rock walls. Retreat back and go through the door to the north and enter a larger room. To your right there's an open hallway, go down here and kill the single guard on your left (kill 1/18). You start in a room, go forward and through the door. I'll give a bit more detailed of a walkthrough on this level specifically to make sure you get everything, subsequent levels I'll largely defer to the online maps for you to refer to. This first level is a bit special in that you'll want to get all the treasure, kill all the enemies, and find at least one secret on it.
