I really liked it, i beet it, the mystery in it was really cool, graphics were great, and it was just fun to play. It has a nice couple of twists, but it's a bit short. I don't know why someone wouldn't like it, the story was really cool, good selection of guns, and plasmids. Enemies were difficult, and overall it's just a fun game to play. Only takes about a week to beet it if you don't play it in huge chunks. So it's not a huge time consumer, but it'll take some thought. Just my opinion though.
i finished the game a long time agoo lol but it whs a really cool game i enjoyed playing it only now tht i have finished it its a bit boring bummer they did not put multiplayer into it xD