Most of your menu buttons don't do anything.
The guy with the gun seems kinda OP, but I guess don't bring a knife to a gunfight.
The combat system is a bit of a mess, way too much on screen to tell what is happening.
I like the music that plays, but you don't have any SFX. It makes your actions feel empty.
Your textures need some variation and you need to add some clutter/decals to give some sense of place.