Unfortunately I am having an issue with the shooting, I click left mouse button and nothing happens? It's a shame cause it looks like a fun game from the atmosphere and the comments here!
EDIT: nevermind, I'm dumb :D I figured it out! And I was right it is a fun game, and very satisfying to play once you get a few upgrades. The visuals and sounds are great too. I only wish it was a little bit harder as the game goes on. After a certain point all I needed to do was stand in place, spin and spam bullets :D