It’s pretty fun! Nice pace and variety of gameplay. It’s definitely a love letter to Metroid lol. I think at the very beginning there could be more tutorial of controls, like I didn’t realize at first how to use the floaty jump by pressing shift. I know it says in the written controls, but you could let the player know to try it the first time they need it.
It also seems like enemies will trigger to appear over and over if you return to a certain area instead of moving forward. I got kind of confused in the large room with the platform in it (before the fan blows you upward). As I walked back and forth the same 3 cats just kept appearing so I thought maybe they were waves I needed to clear before continuing.
Also would make sense to refine the shooting mechanic, like maybe limit your laser by making it overheat so you can’t just shoot forever.