OP: honestly wasn't expecting a response to this trash prompt wow. Ok so don't feel obligated to use any of this or get this nasty (or focus on the gory shit at all tbh, focus on hux and kylo if that works better?) but since you asked~

- chest caving in as Kylo uses the Force to break the prisoners ribs
- ass/vag/mouth sliced open for easier penetration (possibly by one of those electro-staffs)
- fucking lightsaber stab wounds, obvs
- hose down throat and water pumped in until they're filled to bursting, then Kylo puts his boot (or just straight up stands) on their stomach, rupturing it and/or forcing water out through various orifices
- literally suffocating people with his dick
- fuck potato - eyes removed, teeth pulled out, tongue cut, vocal cords severed, limbs cut off at the torso, castration, a lump of flesh with holes to fuck basically.
- prisoner forced to watch their comrade be skinned alive, and then left naked in a cold cell with only the skinned flesh for warmth (and possibly the body for food)
- prisoners being left restrained in their own shit and piss and vomit until it starts irritating and eating at their skin
- and Kylo using drugs/bacta/the Force, to keep them alive, awake and aware for as long as possible
- then going to Hux and fucking him whilst covered in blood/piss/vomit/viscera
- Hux imagining himself in place of the prisoners while jerking it
- then goes down to the cell to fuck himself on someone's bloody, pus-spewing wrist stump
- idk whatever

this got a little out of hand, sorry :V