Operation: Klombo egg

Operation: Klombo egg.
One of the few and last Klombo eggs has been stolen. For what purpose? We don't know but in any case, the organization that stole it is renowned for its smuggling markets. 
Your aim is simple: 
Phase 1: Go undercover so you don't have to deal with too many guards.
Phase 2: as soon as the safe detects an attempted robbery, it will warn lots of enemy guards, then you will take your heavy weapons, and exfiltrate yourself after taking the egg.