I actually thought it was pretty satisfying to shoot, the damage felt good and I'm assuming the character jerking about was to simulate gun recoil? I think it adds a small layer of challenge, but the recoil needs to push the character in the opposite direction to where they are firing for it to be really effective.
Lastly I tried multiple times but could not get the building or the artefact mechanic to work at all. Pressing Q, then clicking anywhere didn't build anything. I thought it might be due to lack of resources, but I had over 500 bones. Unless you've coded it to work with a different keyboard layout to mine (QWERTY) then I don't know what I'm doing wrong. Good effort though and well done for getting it submitted so close to the end of the jam.