There need to be more games like this.
In today's society, all that people care about in videogames are better graphics, cleaner sound and bigger explosions. Nobody cares about gameplay anymore and games like Metal Slug and Contra are hardly being made anymore.
I salute a game like this, just because it's based around having fun and not around looking at the beautiful graphics (the graphics in this game are stunning btw) and walking around while doing nothing.
I love the 'revival' that old shooters like R-type, gradius and metal slug are going through and this game fits in nicely with that theme.
To the people saying it's too hard: Grow some balls, practice it a bit and you will do just fine. This is the kind of game you have to get better at if you want to beat it and that's something I miss in modern day's games.
Straight 5 stars my man, and too bad it's so short :)