Battletech...ughhh
I'll be honest, the only thing I know about the game is from studying the Battletech Players who used to play at our LGS. The rule seemed to be,
1: Take up two long tables. Even though you'll only be using half of one to play on, the other one and a half are for the mountain of books and leaning-on space.
2: Move the only fan in the store next to you
3: Never bathe, the player with the worst funk and no concept of deodorant is the winner by default of being the only person left conscious.
4: Shout, loud and incessantly about every rule. If a turn takes less than two hours you have not shouted loud enough or searched every page of every source-book hard enough for the specific wording you were looking for. Have translations of each handy because in Italian it might say that you always win at yelling.
Though I've been told that in other places it could be said of Warlord, Warmachine, and Warhammer as well.