I can confirm there is split screen for PC, in case you want to play with your wives, girlfriends or gay lovers.
But in a super boneheaded move, the only way I got it to work was plugging in two controllers and creating a LAN session.
Maybe it tricks the PC version into thinking it's a console.
Yes, I've been already ranting about this, though posts get buried quickly.
Only two controllers, no controller + M&KB option, like it already was in D:OS2
And most horrendously - no uniting of the split screen when the two characters are standing close enough to each other, like it already fucking was in D:OS2