User blog comment:SociallyAwkwardEpic/The Festive Special now available./@comment-22427681-20141218181811/@comment-25261281-20141219180206

Stealth is actually possible in GTA V in missions such as the assassination mission in the Mile High Club, although you are forced to one-hit kill enemies or they will spot you. There is no delay like in Call of Duty games where you are able to kill the enemy before others are alerted.