Fencer, your idea of "Would you dare to win Espionage by capturing opponent's base without revealing it by a spy?" is good but rather easy. Just capture it with a sab! Perhaps modify the achievement to "Would you dare to win Espionage by capturing the opponent's base with a 4 or 5 without revealing it with a spy?"
(Cacher) Si tout à coup le site apparaît dans une langue étrangère, cliquez simplement sur le drapeau correspondant à votre langue pour rétablir la situation. (pauloaguia) (Montrer toutes les astuces)