BBI shortcuts?

[Surfacing]

Been down there 3 times to see how far I can get and I havent noticed any short cuts or way points. Do I have to reclear everything every time I go back?

[RK/Dragonfly]

The shortcuts are in those corridors after boss fights. There's a lever near the gate you pull to open the gate which takes you back to Olra.

[Forblaze]

There are two shortcuts, both after a major boss. The first is after the Gazer, which is a giant beholder, and the second is after the Dark Bishop and Cursed Dragon combo.

You can repair riftstones to use for checkpoint saves, and there are also two rest stops that have a vendor in them so you can sleep and resupply.

[Harukage]

You will also need to reclear BBI and reopen shortcuts after the Daimon's first death. And BBI will become a lot more brutal. After that you are free to visit any part of BBI and even farm Daimon for top items.