carnival73: 'Tactical' play appears to come from the player's own elbow grease - it's not implemented in a way that uses strict punishment for those who would rather just run and gun...and so therefore it's just a suggestion.
Kinda like a Battlefield game where you are kicked from the server because the kids running it have made up their own rules like "No Running" or "Pistols Only."
In other words, if a group of people were to play the game without having seen any prior ads - The game would be carried out like Counter Strike.
Well, if the PAX demo is anything to go by, you actually died instantly in a single hit (why did that get changed I have no idea), which by itself changes the dynamics of the game quite a lot. Furthermore, AI is supposed to shoot at you at sight as opposed to look at you like a bunch of idiots, they're supposed to converge on your position when they hear direction gunfire is coming from (importance of silencers) etc. That was the original idea of the game. Not to mention it's not team vs. team deadmatch, it's primarily objective-based coop vs. AI, with a lot of importance placed on loadout chosen before the game - nothing like Counter-strike, basically.