This is a strategic shooter and hence you need to manage your command points for deployment and kill zombies for more points. Tactic matters so you have to consider spending your precious command points on a soldier or a combat engineer to repair the walls.
i made an “AI Director” script which tracks the player progress and adapts accordingly. This is so that no two games are exactly same. For example if you are doing well, watch out for greater challenges. If you are struggling, the AI Director will “try” to be nice to you. ( only during early game haha )
I also tried to bring upon an intense atmosphere. The AI Director cues music based on the situation. If you hear a menacing track, better watch up!
Alas i am just a dreamer with hopes but not competent at coding / graphics . . i will be most happy to see many people having fun with this game! Hopefully you can kindly give it a try and let me know how i can make it better.