Not sure if this image worked this time... having difficulty uploading it.
Added music, player boundaries, a camera for when you switch to tower mode
https://gfycat.com/drearyalarmingaxolotl
Did a movement pass (made the movement more snappy, added "friction", added variable jumping, added coyote time to the jumping).
Added a machine gun
Made weapons swappable with an upgrade (regular Gun, Machine Gun)
Ammo
Gun Upgrade dispenser/pedestals