Honestly it’s a good game :)
the fact that it uses fixed screens kinda reminded me of some very oldschool shooters that also had no scrolling, with the added metroid vania progression added here.
One thing missing that could be a cool addition, would be to have some various shot powerups to add a bit more variety if you plan to keep adding to the game.
None the less the game is solid feels good to play, and i like the fact that you made the destructible turrets not respawn to help with the backtracking, and the auto health refill when you defeat a boss.