The level code for the chapter is Scientist At Work in the Dreamcast version. In the Dreamcast version, the maintenance access that leads to the reactor features a new room, which serves as a level transition area. The main goal is to disable and flood the reactor core to reach the inaccessible areas above. The chapter shares the same general premise. Reactor Lab is the predecessor of Lambda Core, and is the sixth and the final chapter in the Alpha version of the game. When the teleporter is ready, the player can jump into the portal and travel to Xen. While the scientist works, the player has to protect him from the aliens that warp into the room. He begins opening the portal from the control panel above - a process that takes an excruciatingly long time. To prepare for what lies ahead, the player is given a Long Jump Module for navigating in the alien world, and the equipment of the survey teams.Ī scientist is waiting for the player at the main portal. The player is tasked to find this creature and kill it to stop the invasion. The science team suspects that there is an immerse portal in the alien world, created by the intense concentration of a single powerful being. There is a scientist and security guard waiting for the player at the top (or final) level of the reactor core.

The player is required to activate both pumps to flood the reactor, and also activate it in the process, to reach the teleportation labs above. They're waiting for the player at the tip of the Lambda Reactor. He explains that this is the last entrance to the complex, as every other entrance has been sealed off to contain the invasion. A scientist was left behind to let the player into the complex. The player finally arrives at the Lambda Complex. For the the game's full story, see the Half-Life storyline article.

Black mesa lambda core