I've made a lot more progress, but its not all easy to show in a GIF. This new firing animation, which also uses the hold-to-aim/release-to-fire controls, is good tho. The new two-step firing makes the combat a lot more intense. What a GIF doesn't show very well is the tightened up controls for movement, and the big boost in atmosphere with the addition of a soundtrack and good effects I've edited from a collection of samples.