Surprisingly difficult game
The nice thing about this game is that is take classic gameplay and updates it to todays standards. It feels really simple until you get into the later parts of the game. While at first you're breezing through the levels by the end you're struggling to survive. This made me wish for a co-op on the campaign, but sadly it isn't there.
The stages on this game are good looking, though they're just the same background repeating. The enemies are pretty good looking and varied too, more than you originally expect.
When I first downloaded this game I really liked it, but after playing it for a while I lost interest. I still might go back to it again if I get bored, but honestly I don't think I will. You're probably better off not buying this one.