The Nightmare Update Title update for Crime Scene Cleaner has 18 achievements.
Unlock all skills in Cleaning skill tree
Unlock all skills in Water skill tree
Unlock all skills in General Skill Tree
Unlock all skills in Tools skill tree
Unlock all skills in Pressure Washer skill tree
Complete nightmare version of the "Bad Call" mission
Complete nightmare version of the "Trial by Blood" mission
Complete nightmare version of the "Toxic Love" mission
Complete nightmare version of the "Short Circuit" mission
Complete nightmare version of the "Italian Job" mission
Complete nightmare version of the "Affair with Death" mission
Complete nightmare version of the "Friendly Fire" mission
Complete nightmare version of the "Party's Over" mission
Complete nightmare version of the "Modern Art" mission
Complete nightmare version of the "Call in Dead" mission
Complete all nightmare missions
Complete your first True Cleaner challenge
Find all music discs