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.
brine cave
There is 1 Kabutops and 2 Omastar =]
See related link.
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
After rescuing scizor in crevice cave do missions for about 3 days and go to the guild's sublevel 1 and you will notice that there are no Pokemon there so proceed to the guild's sublevel 2 you and the guild will meet team charm(Lopunny,Medicham, and Gardevoir) and will ask if you can join them in their treasure hunting to aegis cave then complete the needed unown stones in aegis cave by beating unowns.voalah!there you will have to defeat regice , regirock and so on and so forth.