In the end, Ryan and Alissa couldn't just leave the soldiers behind while they clear the dungeon, and they couldn't go separately as well. So, Alissa made sure to lock them in some spheres of earth and then rolled the spheres toward the dungeon. That was probably a not place to sleep, but Ryan didn't feel any pity, they tried to kill or at least put him to sleep to do who knows what. Besides, he certainly wouldn't bring them to the boss room after they tried to knock them out.
Regardless, clearing the dungeon went as smoothly as always. The boss was basically a big frog that could spit a lot of poison, but it didn't do anything against Ryan and Alissa since the creature was slow. Training his Poison Resistance could wait, so Ryan hurried to finish off the creature.
Congratulations! You have cleared the dungeon and obtained its treasure! As a reward for your achievement, you can obtain one of the three following classes: Viking, Trickster, and Teacher.