Well .. I really do not know what Lucky does, did not know there was that kind of stat in the game since it does not show up in stats.
But for my knowledge, I would say that EGO is your HP or life, endurance would be a type of stat that helps in defense, the greater, the greater the reduction of enemy blows.
The excitement helps in the bar below your ego, the bigger it is, the faster your bar will get full and you will give an orgasm first.