A very good a challenging game. I really like the active reload for the crossbows. Honestly there isn't much reason for me to pick a bow over a crossbow (especially when you get reasonably good at timing the reload), and that is my only issue with the game.
It kind of sucks to have to walk (technically running in-game) for cover... especially when you don't regen health. I'm fine with no regen, I just wish I could move a little bit faster. (I don't even walk as slow as these guys "run" IRL.)