Star Wars: Knights of the Old Republic/Lower City Apartments (West)

As you enter, you see Calo Nord confronting two Rodians to your left:

He draws two blasters and guns down Luurgo, then the second Rodian, before turning and leaving.

The Vulkar Enforcer uses an Energy Shield, but you may be able to damage or even kill him in the first combat round with blaster fire before he does so. Otherwise, use of melee weapons or ion blasters or rifles is advised.

Black Vulkar information

Vulkar Gang Boss
Opening the apartment door to the southwest reveals a Vulkar Gang Boss accompanied by a Black Vulkar:

The Vulkar Gang Boss uses an Energy Shield, but you may be able to damage or even kill him in the first combat round with blaster fire before he does so. Otherwise, use of melee weapons or ion blasters or rifles is advised.

Black Vulkar information

Search the supplies in the east corner to the left of the entrance:

There's also a footlocker in an alcove in the north corner to the right of the entrance, guarded by a Minor Frag Mine:

Mine information

If you're careful, it's possible to skirt around the mine without setting it off to open the footlocker.

Sealed Strongbox
Opening the apartment door to the northwest reveals a sealed strongbox in the west corner of a room, protected by a Minor Gas Mine that will need to be recovered, disabled or set off to access the sealed strongbox:

Mine information

There's also a desk against the southwest wall:

This gives you the information you need to enter the proper password responses to disable the lock of the sealed strongbox (there's no other way to do so):

If you don't enter all the proper password responses:

There's nothing to stop you trying again as many times as is necessary to enter all the proper password responses:

Selven's Bounty
The northeast apartment has a low security door: it only has DC 12, so any character who spent any points in Security (including Carth) can unlock it; alternatively it can be bashed open, although it resists the first 5 points of damage and has 20 Vitality.

A human female will challenge you immediately:

If anyone is equipping Sith Armor:

This is the only response which avoids a fight, albeit only temporarily if you try to enter or speak to her again, or search the footlocker to the right of the bed against the northeast wall (whose contents are random).

Strangely, Selven uses both Rapid Shot and Master Rapid Shot (but not Improved Rapid Shot).