It's very tough. Part of it has to do with the controls I feel. You want to keep it far away so you can move and aim, but you also need to keep it close so you can pick up items, and having to switch between those is a little awkward. Also, middle click is a very hard button to press while having two fingers on the mouse. There were also a couple times where the bullet would just go through the enemy (or at least look like it did). Other then those gripes, it was quite smooth, and I liked all the little touches like the slow down effects which really helped create the sense that you were a badass action hero! Nice job!