What?!
First of all, try to make it correspond with the English language.
you do not "Win the Mission" you Complete a mission. You can't even read what the pilot is saying. It was just really annoying, i couldn't even stand it past the first two levels. I played it all the way though, but half of what may be a salvageable storyline was randomly cut out.
Here is what you need to do:
Don't call them Japanese People in Helicopters Call them Japanese Helicopters. Also, the "spawning" of the copters was just stupid. There were too few and too random. I just can't say anything good about this game other then "hey, it works"
You may want to reconsider redoing things, but don't give up on this yet. It feels rather half-backed and lacking any icing.