Stolen from here – a very good 10 commandments list.
So, without further ado, here are the Ten Commandments of Dungeon Delving:
Thou shalt learn as much as possible about the dungeon and its denizens before venturing inside.
Thou shalt make appropriate preparations and diligently equip yourself before entering the dungeon.
Thou shalt have a plan and thou shalt stick to the plan.
Thou shalt work as a team.
Thou shalt not wander off alone.
Thou shalt not try to kill everything you encounter.
Thou shalt pay attention to your surroundings.
Thou shalt keep an accurate map.
Thou shalt remember that running away is sometimes a good idea.
Thou shalt share any treasures you find fairly.