Niosa Refinery is the first map in Orion's Threat, one of the campaigns introduced in Alien Swarm: Reactive Drop.
- Destroy Swarm Eggs 0/23
- Clear complex area.
- Redirect power
- Restore power inside LVC.
- Recieve Code
- Unlock access to the deeper levels.
- Proceed deeper inside the facility
- Go deeper inside.
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