Part 7 of playing Gunstar Heroes on PS3 is the final part of my playthrough of the game. in part 6, https://youtu.be/RKKnRQQN82A, i ended that video with a try at the final boss rush. in this video i completed that boss rush as well as the final boss battle.
i don't want to go into story spoilers here, you can choose whether or not to watch how the video ends. but what i will say is that i found the boss rush to be easier than some of the other parts of this play through. i was surprised that i managed to beat it, i think, on my third try. i was a little lucky that the game continued from the final boss and that it didn't send me back to the start of the boss rush.
at the end of the game, once it's all finished, i'm kinda left speechless. it's one of the hardest games i've ever completed. it's hard to say why i kept on going, i imagine there's a level of stubbornness behind it. Gunstar Heroes does have some good points, and from a technological standpoint it does some cool things. but it's difficulty is brutal and unbalanced. i can only recommend that if you're going to play Gunstar Heroes as part of the SEGA Vintage Collection on PlayStation 3 then set the difficult to the easiest.