Yes, the cats can be your followers, and help you to fight. In the video, at the final, you can see two cats following to the girl. As they uses the same code that the human bots, can do the same.
Also, the cats are rideable (bigger cats). I hope to show in a video this weekend.
About the game, the aliens are inaccesible for the player in the first part of the history. You can see their ships flying, but can’t access to them. Then is a sword game, you only have swords, bows, axes, etc, to fight against others humans (and cats).
Forward the history, you can get alien weapons, and the game will be a shooter. More work for me, but the good thing is that all is done.