Find the emergency staircase
The game starts when you wake up after a hard night (a game intro is in fact good introduction into a main plot) in an empty room. There is a Medium MedKit #1 in a bathroom. Take it - you may need it in future. After you leave the room, you'll find yourself in a corridor. You can turn left and explore adjacent, open room (known to you from a game trailer). When you're ready to go, head the other side of the corridor. Do not forget to loot encountered luggage #2. You'll find money and other items, which can be useful at later stage of the game.
You get to a blocked passage. Note that a room to the left is open and enter it #1. At this point you should use a Flashlight ([T] key), but watch for a running down battery. After preliminary exploration of this room and gathering few dollars, walk to a next door. You must break it yourself #2. First move your mouse (or an analog stick if you play with a pad) down, and wait until a horizontal line gets to the middle, near the red area. Then move your mouse (or an analog stick) up. If you manage to hit perfectly, you'll open the door with first try. If not, you'll have to repeat this procedure several times. Try not to delay with opening, because after longer stillness an indicator disappears.
Find the elevator lobby
After getting to a next room, go back to the corridor. Turn left, towards an evacuation stairs #1. Unfortunately, the door is closed. Go ahead and after a while the game activates a cut-scene #2.
Go to the elevator shaft; Open the elevator hatch
Turn around. The only open elevator shaft is on your left #1. To get inside an elevator you have to open a hatch. In order to do so, hold [F] key for quite a while #2 and then jump inside.
Follow the Voice's instructions
The elevator unfortunately collapses to the bottom. As soon as you get up, you'll hear a mysterious voice from a speaker, which will accompany you to the end of the game. Crouch and exit the elevator. Go towards a corridor, and then turn right, towards tool storage where you'll get weapons. You'll see infected in a distance. To your misfortune, they will also see you #2.
Turn around and run from the infected
Quickly turn around and run to the other side of the corridor #1. Try not to turn away and it would be good if your stamina bar is fully charged. Another cut-scene starts - unfortunately you're bitten but finally someone saves you #2.
Blood on the Sand
Obtained from: Jeannine
Difficulty level: Easy
Reward: 2000 Exp
Find a weapon
This quest starts when you walk to the main door #1. A woman standing near you will persuade you to help a lifeguard who earlier helped you. But you're not able to go outside until you get some weapon or Wayne lets you out. You do not have to look far - there is a paddle #2 next to the door on the right.
When you're free to go, run outside. You'll face your first zombies in the game - Walkers #1. They are rather slow and attack you by simply walking towards you. If they grab you, they try to bite you. If such situation happens you have to press first left mouse button and then right mouse button in the right moment. Do not wait any second more - get rid of all creatures, thus saving Sinamoi #2.