This is really cool. Definitely calls back to Super Metroid, but you added the light features which take it to a different level. The controls were nice, though I hated the flashlight weapon for being so slow. However I suspect if I was better at this game I would have found a new weapon at some point.
Finding the double jump was super satisfying, especially after finding the ledge I couldn't reach without it. Great little mini narrative right there.
The ONLY complaint I have about the graphics is I wish there was a getting-damaged and dying animation for the enemies, just to add some juice and make your weapons feel more effective.
Overall, amazing. Definitely one of the best if not the best I have played so far.