So, I was playing vanquish last night. One feature I discovered fairly quickly in the game is that if you press the thrust button while in cover, your character lights a cigarrette, smokes it a little, then throws it away. Nice touch adding to the eighties action movie absurdity of the game, I thought.
Last night, for the first time, I noticed that you actually have three cigarettes per level. This limit suggested to me that smoking actually does something, but I couldn't figure out what.
So, I just looked it up, and apparently, the cigarette being thrown away can actually distract the enemies! THERE'S EVEN A GODDAMN ACHIEVEMENT FOR DOING IT!
Unbelievable.