Alarm

The alarm is a feature found on every heist. It is a key stealth mechanic, and players must avoid triggering it in order to complete the heist in stealth. Setting off the alarm will cause the heist to go loud, consequently resulting in all NPCs and the police to become alerted. If possible, guards and civilians will leave map borders. Shortly after stealth is broken, a police assault will take place, in which waves of enemies will fight the crew. (20 seconds for first responders to come, and 50 seconds for the first police assault to begin)

Civilians

 * "A citizen heard gunfire!"
 * "A citizen saw a masked criminal!"
 * "A citizen saw a civilian hostage!"
 * "A citizen saw an enforcer hostage!"
 * "A citizen saw a dead body!"
 * "A citizen heard a drill!"

Guards

 * "A guard touched a criminal!"
 * "A guard heard gunfire!"
 * "A guard saw a masked criminal!"
 * "A guard saw a civilian hostage!"
 * "A guard saw an enforcer hostage!"
 * "A guard saw a dead body!"
 * "A guard saw signs of trespassers!"
 * "A guard saw a suspicious bag!"
 * "A guard saw broken glass!"
 * "A guard heard a drill!"
 * "A guard was injured and reported in!"

Cameras

 * "A camera saw a masked criminal!"
 * "A camera saw a civilian hostage!"
 * "A camera saw an enforcer hostage!"
 * "A camera saw a dead body!"
 * "A camera saw a suspicious bag!"
 * "A camera saw broken glass!"

Pagers

 * "A guard's pager was not answered!"
 * "A criminal hung up on the pager operator!"
 * "The pager operator was not convinced!"
 * "The pager operator reported a guard's death!"

Heist-specific

 * "The elves were angered!"
 * "A metal detector detected a criminal!"
 * "The bank's phone was not answered during active hours!!"
 * "A heartrate monitor detected a death!"
 * "The cameras were not destroyed fast enough!"
 * "A patient's status has changed in the ICU!"
 * "Eliminate the guards and run!!" (Shadow Raid: Crystal Clear)
 * "A spirit summoned the police!!"