In the Hidden Dungeon,
The Undead Bonesword Samurai was the only real threat in the Hidden Dungeon. Well, to be fair, there were his twelve disciples and the countless mobs, but Albrecht knew he could easily defeat them.
Right now, the Hidden Dungeon wasn't bound to open just yet, and Albrecht could take advantage of it by defeating the disciples one by one.
Before he exited the Hidden Dungeon a couple of moments ago, he had already located the Twelve Disciples. He didn't waste any time heading to the First Disciple before anything else.
'Ah right!'
As Albrecht headed to the First Disciple, he opened his System windows and saw that he still hadn't opened/claimed some of his quest rewards. Since he had a minute to spare, he opted to open them now, making a mental note that he should check the System Shop as soon as possible as well.