I can see the effort that went into making this, especially since shooters are not an easy genre to make for a game jam. It wasn't quite for me, and I found it a bit difficult to get into.
I was a little confused by the theme, with both orcs and aliens as enemies, and it felt like there were a lot of ideas packed into a short jam. I think focusing on fewer mechanics could make the experience feel a bit more polished.
Overall, it's an ambitious project, and I can definitely see the work that went into it.