Cool song!! Nice, intense, power rock feel! It is well played and well arranged. The musical hook is catchy! Guitar tone is good! Good stuff!!
Nicely done guitars, strong theme. Nice to hear instrumental hard rock of course. Without a vocal focus the other instruments may need a more active roll in determining as structure especially as the first part went by without too much change.
But it's in tune, time and has a due sense of tension. Could be part of something else, a larger work perhaps.