It's a fun little game but in my opinion needs a couple of smaller things to really make it shine.
For one the background music should change tone the lower your fuel gets to make the player feel some dread when running out of fuel. I think it's called "Shepard Tone", if you used that I think it would really amp up the atmosphere.
The second would be to highlight items of interest. Yes I know that the game is supposed to be dark but I'd hate to miss out on a button or fuel that I really need to pick up to progress. Instead I suggest that you can have a small spark that represents that items are reflecting the light coming from the player. I think that would help a lot to progress the game.
Overall good entry, it looks great but the gameplay needs some fine tuning to really hit it off. Good job!