To start off, sorry I could not upload a video of discussing about playing your game for feedback or suggestion. Mostly the video on my computer is not working. But I did drop down some notes instead. First off can you make the room wider with 6 or 8 pillars and platform. The size of the room will create depth and maneuver for the player to engage. The pillars can be used for cover, and the platforms to be used to escape or shoot the monster. For the monsters create a different size of them with a different attack pattern for each of them to make the gameplay more challenging. The controller on the keyboard when moving left or right it appears to slides while giving the impression of you are controlling a tank when trying to do a 360 turn. I found a video about how to create a 360 turn script for keyboard that may help you.
https://www.youtube.com/watch?v=1uTkWPq5_dw As for when to shoot on the keyboard just add the "S" key to shoot instead. I hope that helps. Here is a link to my game if you would like to add feedback or suggestion
https://www.indiedb.com/games/star-blitz-x1/downloads/star-blitz-x-demo-beta Just make the feedback or suggestion to a more arcade gameplay approach. Thank you.