With its current heavy online requirements, Hitman should never have been approved for sale on GOG. As for the game itself, it's good but obsolete. Almost everything included in Hitman 2016 is also in Hitman 3.
It's awful in all the right ways, while still remaining actually fun to play once you get a hang of the controls. With great music and sound design, varied levels, amazing cutscenes and fast paced gameplay, Arabian Nights hits all the right(?) notes. I have not once managed to beat this game without using glitches despite several attempts but as a glitchy speedrun this is incredible.