• Enemies are practically blind. Their view cones are exactly as shown on the radar.
  
• They will hear your footsteps in a very close range but if you crouch they're completely deaf.
  
• You get platinum for not killing anyone in this mission.
  
• Bodyshots and melee attacks result in instant failure.
  
• I could not find any distractions to trigger or anything of sorts. Only exception being shooting a bottle in the middle of the first room but that will only distract one person blocking the exit and not the other.

Here's a fast, more or less optimal route to beating this mission easily.
https://youtu.be/-SJqGChff0E
If you take it slower it will only get harder in the later sections.
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