never played the first one which i was always pissed about so i got this for cheap not knowing if i could get into it. i'm not much for stealth games but this game is fantastic! haven't killed anyone or set off any alarms yet!
if you love HR i strongly recommend trying out the original. if you can get past a few archaic design choices and the limited visuals then it can offer an even better experience in terms of story, gameplay options, exploration ect.
but yeah HR is a great game(though dont expect much out of the bosses or ending sections) and does a good job of doing justice to the first game.