Since this is the unpopular opinion thread:
While Absolution is the worst game of the franchise (not an unpopular option, I know), Hitman 2 is the second-worst.
It had a bad story, a lame main antagonist, some of the worst levels of the whole franchise and the distance at which a guard could see through your disguise changed basically every time.
Not to mention stuff like all guards magically knowing that you’re an intruder after breaking a window, even when no-one’s nearby. Or an NPC that starts stalking you once spotted and is incredibly hard to get ride off. Or a mission that basically forces you to skip a cut scene if you want to get an SA rank.