I love the main melody on Fight and Mecha, you got something there that really shines, and invasion, terror and there... oh my lord!!! I love the metal guitars, and you do a great job with them. As a suggestion, I'd say that if you added a bit more detail to their treatment, you could achieve guitars with more body and roundness that would sound absolutely brutal. Although, it's also true that with the overall tone of the songs, they might feel a bit out of place. But wow! It would be a real highlight!!!!! Well done!!!