Real nice presentation, great use of assets and I like the menu and music. Game is functional and AI and level design have already been commented on. As a multiplayer online it would have been great to see the multi-level design shrunk down and perhaps made into a mix of open and tight spaces.
Once big thing for me was the zoom on the shooting mechanic, it's very jarring when the zooms at each shot, not so much when you're already zoomed in but still a bit of a challenge.
Overall though it's great to see so much assembled together in a jam. We need more alien team deathmatch games for sure!