I'm extremely new to the GM side of RPGs and I'm sure there are many differing opinions about this but I've been wondering. How much information do you give to your Players at the start of the Campaign and each Session? At what point are you giving too much information? For example, I've designed a session to be mostly combat oriented and am expecting the Players to just flat out run and gun. But after rereading the notes I wrote up I've noticed a second approach that involves a little less shooting and more roleplaying by way of Deception. For lack of a better analogy, the second approach gets them in for the close kill without much resistance. How can I let them know of this possibility without being too obvious?
Any advice offered is appreciated..