Games AR SpaceShooter Game

Howdy y’all,
Here is a video for my game:

i’d like suggestions from you what needs to be improved and how can I setup a great main menu / shop system (any ideas?) / leveling of the character? Currently I only have levels where u go in and shoot and win and thats’ all.

also, if you are interested in trying the game, please leave a comment; I am fixing the bugs but should be able to launch a beta in a wekk.