The bats on floor two don't apparently count for completing the base-level bat farming quest? I started it by jumping to floor two, where the bats are the first enemies you encounter on that floor... but after beating three of them, it wouldn't complete. Even after jumping to floor two and moving up the stairs to one to fight those bats, it still wouldn't complete. Only grinding all the way through to the bat area from floor one would do the trick. Either something's wrong with the counter, or there needs to be a note somewhere that the bats must be fought without ever leaving floor one in order to complete the quest.