you cant. you can finish after the 9th floor or faint.(or if you graduated walk to guild
it has 9 nine
40
The bat cave
The bandit is a Kabutops.
some time after you beat the game go to the second floor of the guild (where the swap shop is) the other guild members will be talking to team charm and team charm will let the guild members go to aegis cave.
There is 1 Kabutops and 2 Omastar =]
See related link.
brine cave
It is in the Guild Cave to the right of the Cullis Gate.
buy them or go on the missions and get them as a reward Also find them at brine cave, mystifing forest or apple woods sometimes have a few. I recommend brine cave it helped me dfeat Dialga.
after you beat brine cave lapras will come into the picture and he will take you there
The Murky cave goes down 20 floors, if you are escorting Gengar, you will have a chance to save Gardivor from the ninetails curse at the bottom of the cave.