Red Storm 2
Would you like to take your robot and take a tour in the garden? I think you might want to take your robot and fire like crazy and spend bullets then you are in full game but the game is not simple at all.
Red Storm 2 is not an easy game at all. Developments and parts are more or less the result of mechanical robots that you kill on the other side, and you are trying to combine all of them with flying robots and fixed fire machines, not just moving robots, hard. I can also advise you to pay particular attention to those available in the bridges that you can fall down on the map.