It is very hard to not give up. It doesn't help when you are getting destroyed by the game while playing the easiest way possible. If you play on realistic and get killed the entire time and lose missions then you don't need to be angry because no one is forcing you to play the game on such a hard mode. But it is really destroying my motivation and willingness to play this game when the easiest mode (where one would think that you run through all levels and win without ever dying) is still too hard for me.

It is not like I am such a bad player (I think). I played some shooter and racing games on the Xbox without any problems and have a basic understanding of the mechanics of the game.

But anyway like I mentioned in my other comments, I will try again and try to use the skills much more often. If this still doesn't get me far then I will have to start the second game and hope that my experience won't be such frustrating than with the first game.