Cool take on the theme. I like the set ups and payoffs. Talking to someone that gives me a knife that I can use later made my choices feel impactful.
You’re a one person team so I think you accomplished a solid story in the time frame. Only suggestions would be to give some meaning behind why the newest member is taking the lead. Also, this elite team seems to run out of amo quickly. It would help if the player is given a choice that leads to the team needing to fight off a zombie horde, which results in everyone having low amo. Or something Ali g that line.
Overall, solid work.