<p>There is no such feature in-game, sadly... </p><p>A way to go around:</p><ul><li> Always keep your screenshots folder open.. Since tibia client takes a screenshot when a boss is killed (as long as you have that option selected)</li><li>Find the screenshot of the boss you are willing to kill again and check when was the screenshot taken.</li><li>If thay screenshot was taken over 20 hours ago, then you have access! </li></ul>access!</li></ul><div></div><div>P.S: the screenshots keep the name of the character in the file name, so you can know which character that is, even before opening the picture </div>