When you enter dungeon, you have 10 seconds of invulnerability, take no damage. But I killed a guy, and this guy come back to the place he died and hit me (my armors are not god one), so i can't damage him when he have 10 seconds of invincible, after 3 times, i died.
My sugguestion: when you have the 10 seconds invincible, you cannot damage other players and other players cannot damage you too.
