Moerighan

Took me 17 hours to finish on my first playthrough, I never played the original so I didn't realise they were shorter, but honestly by the end (especially in the prison and labyrinth) it just felt dragging. Every time I thought I was close to the end it just kept going.

Don't get me wrong, I loved it, enjoyed the story, I even played it relatively quickly with figuring out the puzzles and everything on standard difficulty. But when I saw the under 10 hours achievement I couldn't even fathom it or another playthrough for a while.

I had to look up the other endings on YouTube because by the time I finished it, the thought of going back and doing everything I'd need for all the different endings (and it's a lot) was very intimidating. I only got the standard ending as well.

They probably used console cheats or trainers to either make themselves unkillable or do overpowered damage. That's the risk of mods on PC, same thing happened with the big dude in Kingdom Come Deliverance