the bosses and the music are tributes to almost every contra game, even the game boy, 12:00 boss followed by contra III alien wars stage sections, alternating some sequences with motorcycles like in Shattered Soldier etc. is quite nice as a tribute or as a fan service I guess but is not an evolution of contra is more like a nostalgic revival reimagination and its ok but in that regard I still choose Nes JP Contra or Shattered Soldier for some arcade fun instead of new Galuga, anyway amazing speedrun and thanks for sharing your skills which are truly epic (I cant by any means play even near your level, your a master)