A simple, but pretty fun little title, even if the combat system can be broken clean in half by grinding at the punching bag and pouring all your points into strength. I can see *some* attempt to quell that by having higher-level enemies attack first, but it clearly wasn't enough.
There's a fair number of places to go, things to do and medals to earn outside the combat, so I can't hold it too much against this.
If you're looking for the Golden Astronaut, lick the pavement in the alleyway - you'll find it in the bottom-right corner.