Corrupted Horizons

Corrupted Horizons is DLC 4. This DLC adds one more soldier class: Mutoids, one new mechanic: Corruption, one new enemy type: Acheron, three new story missions and few pieces of research. Corrupted Horizons DLC starts when Pandoran Colonies research is finished.

Walkthrough

Research Pandoran Colonies

This research is unlocked when player reveals and destroys one Pandoran Colony (it can be any type of colony). Link to this research: Pandoran Colonies research.

After this research is finished cinematics 1 (CH Corruption Breach) are played: Hello? Anyone? This is station sigma-seven-one. We need immediate evacuation. I repeat we need immediate evacuation. The facility has been compromised. The specimen two escaped containment chamber and is roaming throughout the lab! You need to get us out of here and purge the entire facility! The specimen must not be allowed to escape into the open! if it does... Its has released strain variant. I am initiating self-destruct procedure. The strain must not....