Great, pretty retro. Simple, fun, with a solid story, fun and satisfying gameplay.
This is one of those games that gives you something nice, pretty straightforward. You do it, feel the thrill, enjoy the story. Done, it's complete.
It is pretty short but it delivers what it's suposed to in that time. And it doesn't leave that feeling of "I'd like that this game was longer", because it's complete, a full circle. Instead it gave me the feeling of "Damn, I'd play this again any day".
Great game. Nothing to complain, everything that was done, was done well.