'Silent but deadly' is a combo that pops up when you meet the requirements below. If the player is on Steam, the player will get an achievement alongside this.


Silent but Deadly combo People are complaining about an awful smell that appears to suddenly appear out of nowhere!

Guide Edit

Evolve Corrupted Air, Night Wraith and Dark Infiltration and then wait for the pop-up, with the title of 'Silent but deadly combo'.


Steam achievement.

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