Gamers come up with some peculiar tactics, from tying a halfling to a pole to check for traps, to unleashing the wrat of a flaming donkey on a dungeon complex. Occasionally they even come up with good plans. There’s something of a lack of basic dungeoneering tactics in most RPGs, which is fine when they’re narrative-based and hand-wavey ones, but spells doom for supposedly experienced knights and assassins in more hardcore games.
One of the few RPGs to really delve into the tactics of dungeoneering, was Dragon Warriors, the old Corgi paperback game that has been reincarnated in more modern days.
Here’s a few examples of being surrounded, exploring corridors, guarding against multiple opponents, etc.