Hi, I've been playing the game and made a video about it :D. I wanted to share some feedback with you that hopefully it's useful to you :)
-Visual style and main mechanincs of the game are quite well done and work very well :D.-I had problems with the cursor not been locked at the game window and crossing between the game and my desktop a few times.
-The difficulty of the game at the begining is pretty hard and you don't get to adapt to the controls easily, reducing the amount of enemies on the first and second levels of the runs (at least a few times) could make the game easier to get into.
-Pretty interesting context and theme for the game.
-Bullets from enemies shouldn't be allowed to go through walls and last until they dissapear of the map, this may cause getting killed by some random shot from an enemy some time ago while you are running away or going to the next level.
In conclusion, the idea is great and it has a lot of potential, I hope you keep working on it. Hopefully this is useful for the development :D, also if you could subscribe that would help me a lot :)
Regards