The Beast's dialogue is found in the game's .rpa archive, as it's just English using a funky font. You can look at this yourself using any app or website that allows you to unarchive .rpa files: you want the lines in file 29_Hell.rpyc that begin with beast "{font=CISFCamouflageKit.otf}

Narration: The beast turned.
Narration: Then it did something very odd. It raised a gauntleted hand to its face—if it could indeed be called that—and gestured for me to stay quiet.

Beast: Don't wake anyone up


Narration: The Superior's old traveling cloak finally tore, and I fell into the snow, free from the beast's grip.

Beast: I don't want to hurt anybody else


Narration: I had nothing left to gamble with, and no leverage against this beast, other than the fact that it wanted my silence.

Beast: I am being used
Hedwig: I-I can't understand you.
Hedwig: I just hear noise.

Narration: The looming figure seemed to consider for a moment.
Narration: Then, slowly, it raised its sword.
Narration: I tensed up, but the beast held its other hand out to steady me.

Beast: The Devil locks me in this horrible thing and gives me orders

Narration: It turned the sword toward itself.
Narration: At first, I thought it meant to harm itself, but instead it seemed to be trying to cut something.
Narration: The sword was far too long and unwieldy for this task, however.

Narration: Apparently frustrated, the creature fell to its knees and placed the sword in front of me.

Beast: You'll have to do it
Hedwig: W-What?
Beast: Cut these and I think the mask'll come off

Narration: It pulled its robe aside to reveal that under its heavy cloak, it was wearing chainmail.
Narration: Layered on top of this armor were leather straps.

Beast: Cut it

Narration: Slowly, it pointed to these straps, and then to its own head.

Beast: I don't want to fight you

Narration: It indicated for me to pick up the sword.

Hedwig: You want me to cut those free?
Beast: Yes yes please God set me free
Beast: I don't want to do this anymore
Beast: I don't want to hurt anyone else

Narration: I bent down to pick up the blade, turning it in my hands slowly.
Narration: The creature looked oddly pathetic, kneeling here.
Narration: It held its robes open, gesturing eagerly at me.
Narration: It continued speaking in a muffled and dark tongue.
Narration: This close, I could sense a familiar sulfuric stench.

Beast: I repent
Beast: I repent
Beast: Please help me

Narration: I could not bring myself to look directly at this thing.
Narration: And even out of the corner of my eye, there was nothing that I could see that was worthy of pity.