Bent

First you will need to obtain the black key from the iron-bound chest east of the enchanter Cymeneth. To unlock this chest you will need to get the iron key from Focault himself. (This chest is also the one that can repop with the heart-shaped amulet.) Once you have the black key from the iron-bound chest go back two rooms west to the Narrow Corridor.

1S, 2E
Search to reveal a north exit.
2N, 2E, Down, 1W, 2Up, 1S, 2E, 2N
Unlock the north door.

Prepare yourself for CPK combat if you choose/need to and move north into the Vault where you should find Bent. (*Note, that he's not particularly hard to kill.) You can unlock and open a chest in this room which has the flag hide-long-descr so you won't actually see it in the room. The magic lock scroll can repop inside this chest, and also on Bent himself. (If you decide to linger so that you can repeatedly kill Bent for magic lock scrolls, the Vault is no-quit, no-recall, and you can't dig in the room so a black moonstone and/or featureless white cube will not help you get out of the room. The only ways out are to either unlock the door south and leave that way or to void out and you will appear back at the recall room, a Shadowy Entrance Hall. As a final note, the black key that unlocks the Vault door and the chest in the vault has only about 6 uses so you may want to keep track of how many times you use the key if you do choose to spend time in the Vault and don't want to have to void out in order to leave.)

Focault

This guide starts off at the recall point of Focault's Magic company. First, you need to collect a skeleton key (or 2 depending on how many repops you want to stay for). These are rather easy as long as you are willing to wait for a repop (45mins). Go east, 4up, 2down, 3up, 2east, this will bring you to "Executive Office", kill the adventurer(if he's alive) and wait for repop. Around 90% of the time this adventurer will repop with the skeleton key. Once you've collected your skeleton key go west, 4north, east, 2up, west, 2south, east and enter the rift.

After that go north, 2west, south, down, 6north, east, north, unlock the east door and enter it. Now if you want add extra protection against someone cpking you, close the west door and lock it. South and East from this room are death traps and the north exit is 1way, so once you exit into it you can't return. Back on course, from here go 4north, 2south and search until you reveal the east.

Enter this room and you'll be in the hall before focault, this hallway is composed of two private rooms, the first one nomagic and both filled with icestorms. To prevent anyone cpking you, you can put 2 people in the first room to block anyone getting in (make sure you leave the 2nd room open incase you need to flee). Focault's door is in the 2nd east and you'll need to use your key one last time. Focault can be silenced and flash bombs of high level work on him quite well, it's a good idea to get his familiars out of the way and sacrifice their corpses since he can raise them back and have them join his form.

Once you've defeated Focault you can exit his area by searching in his CPK room and unlocking the south gate, once inside enter the rent and you'll be back at the start.

Notes:

• Focault repops with the key for the HSA chest completely randomly, however just because he has a key doesn't mean there's an HSA in the chest still.
• Focault holds the Mark of Mystery for second, third and fourth classes, but make sure you go with higher levels or he will kill you.
• It's best to do this area at day time, with sense life so no one can RS you in. However he is easy enough to solo.