Nice job! I know you're still working on it but what you have so far is a great start. I was able to walk, jump and shoot... pick up bullets and patches for health. Man those creatures are scary looking! Adding some sound fx and music will make it even more fun, you can make your own or find free assets. I like to use pixabay. Well done.
For anyone who needs it:
ad to move (note you can only progress forward once you go to the next screen you cannot go back)
w to jump
g to shoot
left mouse click to pick up patches and bullets