For the first point which I believe is about soul of mourning, as the sign says you can hit enemies by facing them and pressing E, However I believe(?) there is a way to fix this using custom collision meshes, and if there is I will have that patched this next update. If it works then it will be a lot easier to click on enemies.
The issue with the shooter is a little harder to fix since rpgiab games have a lot of issue with alternate models and equip slots, but I will see if I can replicate and fix this issue. I apologize for the issues. Shooters in this engine are really cool but are still what I would refer to as "experimental", so there are some issues.
I'm glad you could find some enjoyment in my little game!