Since I consider myself a Counter Strike player that's how I will explain what I do.
I'm none of those species and all of them. I'm primarily tactical and headphones are my best friend. I like a direct approach and rushing when I can do it. I use assault rifles mostly. I use my brain and I will try to flank enemies if I hear more of them coming, and if direct approach is suicide. I use snipers only on long range maps and only if I find one laying around. I never buy a sniper, a good placed shot from m4a1 or AK-47 from someone skilled enough is always better than a sniper rifle because snipers limit your movement and field of view. I only camp when I'm guarding the C4 and even then I move around the bomb site slowly, scouting the area and listening for footsteps, trying to determine the enemies exact location and their numbers.