Trouble in The Wild Wild West

This is my first game project in C# and Unity. It's meant to be very difficult. There is a level selector on the main menu to select any level you want. Obviously this game is very much unfinished and is only a very early prototype. I'm just looking for feedback on what I have so far. Assets have been borrowed from https://www.spriters-resource.com/ and https://opengameart.org/. Some sprites were done by hand and other images such as backgrounds were done via AI. AI was also used to help answer questions about coding throughout the project and cleanup code as I produced the game. It's an indispensable tool for new and learning programmers and content creators. There is a glitch when selecting a level that will sometimes spawn you over and over somewhere where you die. Just refresh the page and you will be able to load into the level find after that. 

All music recorded at home from my keyboard. 

CONTROLS:

Arrow Keys/WASD = Move

Z/, = Jump

x/. = Shoot

esc = Main Menu

levels 6/7 you can hold shift to run