deuxhero
Arcane
I can't remember playing a computer RPG game that went into hell really except Diablo, and it is only kind of an RPG and I am not sure you are actually in Hell or just some place like it, I forget....Drizzt knockoff companion confirmed.Drow (yeah...)
I won't really mind having to roleplay a paladin-type. There is a place for such RPGs. Still, fighting a hell pit seems... kinda generic. Afaik pathfinder doesn't even have a blood war demon/devil distinction to make the forces of hell interesting.
I am sure there are some games that go there and I just can't remember. But ever since I saw the artwork of the paladin fighting in hell from the original players handbook I have wanted to have a module or computer game focused on doing the same . So I would not mind playing a paladin and/or good aligned clerics for that since I almost never play those types of characters normally.
Hordes of the Underdark
Temple of Elemental Evil also has the elemental nodes, which are evil aligned demiplanes controlled by a demon. You even fight a Balor in one of them!