Now one of the frozen creepos is moving your way,use the IR scope and spot the parasites on the body of the enemy. Snipe them all off, and these creatures will explore. Leave the freezer to the south hall and get to a dead end in the corner. From here, take out more enemies and then run down the hall to unlock the garbage disposal door. Head down the hall to the first room and enter the room with the controls of the garbage mechanism below. Take out the enemies that you can and then get ready with weapons to attack the enemies. Now the next hall has items and then when you enter the area, you can hear Ashley crying out again. There are two enemies guarding the door as you turn the corner, take them out and then walk to the north hallway and opent he door at the end. Take out the enemies and then enter the room to finish the job. Grab whatever you can and then head east of the savepoint.
There's another lab area here and be wary of another creature. Snipe whatever you can and then take the four creatures out. Now there's no more enemies and you just have to collect the items (don't forget the Storage Room Key Card). Get out and then go to a merchant, as well as an elevator leading to a communication tower and get back to Ashley's cell. You'll meet the creepos wiating for you at the top of the stairs so start banging away. Then get to her holding cell and use the Storage Room Card Key to open the door.
Now get back to the garbage disposal unit from before. Leave Ashley behind and take out the enemies, and then call Ashley to you when you enter the next room. Take out crossbow wielding enemies and get Ashley safe to the east door and then unlock it. Run over to Ashley and protect her as the creatures mob you. Head west when it's all over to the garbage disposal area. Now start walking south and be prepared for another regerating enemy. Pass under the gate and pull the leverto close it behind you. Snipe down the enemy and open the second gate where a metal bin needs to be pushed out of teh way. Call Ashley and she'll help out. When it's done, continue moving SW where you enounter another enery. Run back across the bridge where Ashley is staying and take the enemy down. When it's done, call Ashley to you again and push another metal bil out of the south hall before moving onwards.