A Second Chance

Head into the Cauldron and secure the area for AFS dropships so that Captain Salyard and his team can escape Abyss and the clutches of Penumbra. If Penumbra agents arrive, you may need to fight them off and prevent them from getting out of the Cauldron and into the tunnels. After the Cauldron is completely secured, reinforcements should arrive.


 * Head into the Cauldron
 * Protect Toby
 * Halt the Penumbra Advance
 * Proceed to the Landing Zone
 * Defeat Lieutenant Dama
 * Defeat Captain Barchman
 * Defeat Colonel Mezen

Briefing
Lieutenant Nelby:
 * I'm... well, surprised. I really appreciate your help. Why don't you take Toby and secure the Cauldron, while I gather the rest of the team.


 * Penumbra has sent so many agents down here that think only of killing... I thought I'd have to kill you too.


 * Toby and the others are the product of an experiment, designed to remove aggressive tendencies from the Thrax. We succeeded, but it was not efficient enough for Penumbra. The project was canceled, and we were ordered to dispose of the experiment.


 * I understand the Bane are enemies, but these Thrax were no threat. We had reservations about Penumbra for some time, but in that moment we realized that we couldn't do it anymore. Salyard and the rest of use saved the Thrax and brought them here for protection, until help arrives.


 * If you're up for it, we could definitely use your help. Captain Salyard has a lot of old friends in the AFS, and one of his former commanders has agreed to give us refuge, along with Toby and his family. They will be arriving soon to lift us out, but we don't know when Penumbra will send more soldiers.


 * Salyard and I will meet up with you shortly.

Debriefing
Captain Salyard:
 * I just don't know how to thank you. It's sad to see the AFS rotting from the inside, being forced to pick sides among our own people. Hopefully Command will realize what's going on with Penumbra and do something to stop them before it's too late.


 * Me an my team have all been offered safe passage away from Abyss. We'll be in hiding for a while, but I hope I get the chance to fight along side you again.

Simply proceed forward, killing all the Penumbra agents as they appear.