Wow, what an ambitious project to tackle during a game jam (especially since it was your first 3D project), that was a ton of assets to make and wire up in a game. Kudos! There were so many nice little details in there, I especially like the sound design (the battlefield ambience was spot on) and audio effects you used (the backwards voice bit was creepy). I'd suggest adding some feedback when you get hit and when enemies get hit so you know a shot connected, but other than that I really like the art and overall visual vibe of this one. Nice job!