Hey nice work congrats!
I know its a very short amount of time and that you probably thought of most of these things but I like to provide feedback on the games I play:
Here are a couple notes I took while playing.
- I liked that there was a variation in zombies
- Can't shoot through player. You could try setting up physics layers so that player bullets are ignored by player.
- Zombie death animation
- Change weapon with scroll wheel on mouse.
- Pickup ammo sound.
- Have the Shotgun shoot more than one bullet per shot.
- Player Damage sound and/or knockback when player takes damage
If you have the time, I would love to hear what you think of my submission.