Stuck at chapter 6, can't get passed the fucking Alien. Tried at least 20 times. Gave up.
The key here is getting the trauma pack and making it to the maintenance area to initiate the emergency shutdown.
STAY CROUCHED!!!!!
When you enter the dark hall way, go left a bit and down the first corridor you see, last door on the left is the operating theater.
Get the trauma pack on the table next to the corpse. Head back the way you came but before you hit the hallway,
hide in the locker as the alien should be coming in about that time. Wait for him to do his run, ideally when you hear him go in the vents. Do NOT go out the north door, there are looter patrolling and you want them as distractions.
When you go back into the dark hallway, hide in the locker on the left, near the entrance. DO NOT hide under the bed. Most of the beds are safe, but that one is sticking straight out and you will be in everyone's line of sight, prone or not.
Wait for the alien to come out of the infirmary (the 1st door you pass) and go into the operating theater.
Exit the locker, go left at the intersection (CROUCHED) and keep your eyes and ears on alert. Any of the beds here should be safe to hide from the alien or the looters. Follow the hallway as it curves around. Watch out for vents
Before you go in the emergency room, you have to go down the path to the right so Ripley can discover the door to the reception area is locked. go back and now head to the emergency room. lots of beds and lockers here to hide in as the alien patrols here all the time.
Head north and to the right to the maintenance area. When you open the door, GO STRAIGHT. There are vents to either side of the door and the alien will hang out there to snatch you. head toward the window and use the stairs on the left and right to get to the two generators. There is a save point on the left wall/