Nice game overall definitely enjoyable as is, but I do have a few notes. 

First of all, I could do with a bit more contrast on the asteroids as it can be tricky to see every thing. Also, a bit more explanation on the engines breaking could be helpful, At first I thought the engines were breaking from getting hit by a rock I didn't see.  Lastly some orientations of rocks will make it so an asteroid leaves the view of the camera and then rotates back in frame with no warning. 

Got a highscore of 60! Definitely a good addition to have score, keeps people trying to beat it ;)

The game was fun, it gets quite hectic and stressful when your engines start to fail and you're basically shouting at your ship to move haha, in a good way! I have a few small gripes with it: I think the asteroids aren't very readable which means its quite hard to see whats coming from the current perspective; also there were a few times where either I died and couldn't see anything hit more, or it looked like an asteroid went through me and I didn't die - probably just need to make sure all collisions are set nicely and maybe that the rigidbody is on continuous detection (if this is unity ofc).

Overall the feel was nice, I played quite a few times to try and beat my own score :)