when you play legend stealth mission first time with ur friend and accidentally shot ur friend in the head and doesn't know that what u hav done friend: so u are considering me as a realistic shooting target in the field?
In the cache if you take out to many people the alarm will be raised, also not disabling the keypad in time, or not taking out the security team fast enough. I hope this helps you ;)
I'm not sure if this counts, but killing Falcon in The Scientist mission will end your stealth run. Funny thing, this happened to me in my first run. I thought this dude was a guard, and shot him. I realized I made a big mistake as I got my butt whooped by these army men lol
Withdrawal guards after seeing a employee jumping off the top floor, The manager being gone for 10 minutes, The manager door and window open, And players carrying suspiciously green bags out of the vault: Ah yes a normal day