Gun Viper Full Walkthrough (Hard | No Deaths)

Another strange Japanese game. You can shoot and use different companions. Companions rotate around you if you move left or right and you don`t hold shoot key. They can`t be killed but they get a "stun" sometimes (not sure why though). List of companions:
T: the only free companion in the game. Shoots bullets in the V shape.
V: shoots bullets with great fire rate.
H (for homing, I think): shoots slow homing missiles.
S: SWORD. You don`t often see sword of a spaceship, aren`t you?!
R: stupidly expensive companion what summons bullets in a short distance and attracts them to itself.
The game has infinite amount of lives, so completing game is always easy, so in all my walkthroughs of this game I complete the game without dying.
This walkthrough is done at "hard" difficulty. I decided to cheese the final boss since if you destroy all off it`s segments it turns into a Lovecraftian horror which shoots way too many homing bullets to be avoidable. Even then this was tough.