There's some good bones here. I liked the art, the spaceship was cool and the grid movement worked fine if a little bit sticky, not sure if this was a bug I encountered or not.
It would benefit greatly from some more feedback for the player. An animation when attacked, some sound fx for everything (doors, attacking, getting hit). I don't think I ever took any damage. The music was maybe a little too tranquil for a 5 minute escape scenario, maybe something a little more tense!
Not bad, you made a game with a solid foundation and could build upon it to make something great. My gameplay is here