my basic strategy when it comes to tournaments is to play tight and to avoid big confrontations early (risking your chips early). i like to take down small-mid size pots here and there to keep myself from becoming low stack, but i stay out of multiway pots unless i have the nuts or the draw + pot odds
are worth it.
then after the table has shrunk down a few players i still play tight, but im a bit more agressive when im taking down pots.
then when its down to 3-4 left...again i play tight, but im raising and reraising and stealing pots as often as i can with big hands.