bottom floor.

Find the Tyrant: Descend the stairs on the back right side of the facility. This is a T-103 Tyrant. A laptop is on a desk to the left of the Tyrant.

Disable Lab Security: To remove the lasers from the Tyrant's holding area, kill the zombies trapped behind the red lasers to the right. Then, flip the breaker switch to the left of the holding areas.

Recover the Syringe: The syringe is in the first holding area to the right. Interact with it to pick up the **SYRINGE** (syringe gun).

Extract Parasite: Return to the Tyrant on the bed. Zombies will attack from the left stairs. Use the syringe on the Tyrant's head to extract the NE-alpha parasite.

Escape the Facility (Initial Attempt): Move back up the stairs across from the Tyrant. The lasers should be gone. The objective is to leave the facility. Parasites and zombies will attack. Parasites are weak but can combine with zombies to form more aggressive Zombie Parasites. Target zombies first, then parasites. To hit parasites, aim directly at them as they move erratically. Move across the bridge above the Tyrant's area and open the door.

Find Keycards: The exit door locks. The Tyrant will move down the corridor. Three black card keys are needed to open the exit door. It is best to ignore most enemies and run to each objective marker to collect the cards. The Tyrant and waves of parasites/zombies will spawn throughout the lab.

Retrieve Black Card 1: In the room down the corridor to the left of the Tyrant's bed area. Parasite zombies will attack upon opening the door.

Retrieve Black Card 2: Inside the central control room, up the stairs and near the entrance door. A zombie parasite is inside.

Retrieve Black Card 3: Inside the room to the right of the entrance door (when facing it).

Exit the Lab: Once all three card keys are obtained, return to the exit door, open it, and proceed to the next area.