There's an interesting idea behind it and it's fun to play. But there are some issues:
- I didn't need to use fuel, normal movement was more than enough to make my way through obstacles and collect fuel and health. I think it could be better to remove normal movement and restrict movement mechanics only to those which use fuel and slow the fuel consumption in that case.
- Controlling and protecting the ship is so easy that I didn't need to be worry about it. I think it could be interesting if you had to collect fuel and health by your ship instead of astronaut.
BTW, It's a cool little game. Well done :)