Thank you for your feedback, I am planning on adding an ammo vest in the near future perhaps in the next update or two.
For the enemy spawns it is on my bucket list for improvements, I have noticed the same thing, and it is more common in smaller spaces. since they are limited on where they can spawn.
For the reset to the menu, I will look into solutions. There has been a bug that has messed with the setup if the player is spawned back to the weapons menu. I will in the future see if I can find a coder that can help me out with this.
I am glad you enjoyed it! I look forward to improving this app and hopefully add coders to help with the development. Since I am developing this solo.