This was really cool! By far my favourite limitation implementation so far. Extra impressive that you did this in a day. For a difficult skill based movement system I'd like to see a little more control over your ship, I would probably reduce the drift and make the movement in the new direction more immediate. Also might be nice to get a bit of extra time when you get a new star to make it feel like doing well is rewarded in some way. Anyway, love it, well done!