The second floor wasn't that much different from the first floor, the only thing new was that a new monster showed up aside from the Dungeon Rats.
[Name: Feral Dungeon Rat
Race: Monster
Stats:
8 Strength
7 Dexterity
3 Endurance
2 Magic]
They were basically just a little bit stronger than the normal Dungeon Rat albeit also a little bit slower, but against both Katsuki and myself, the difference wasn't even worth mentioning.
I told Katsuki not to bother with taking out the Mana Crystals since they weren't worth that much money and would slow us down significantly if we were to try and extract each one.