The fight between the Swarm and the Initiative has forced the Swarm to take a new stance: corruption. The Swarm has started to corrupt Mechatars. The only way to save them is to battle them and win. There is a set of badges called corruption cure which you can earn by defeating the corrupt Mechatars. Corruption appears on every planet and on Ice Oath missions, Hugort will become corrupt in part three.
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Glacius has more corruption missions than other planets.