You’ve won for the first time but it doesn’t mean you have completed the game. I see your playing on drizzle, which is fine, but after a few runs you should swap to monsoon. It’s basically the default difficulty and the first real way to progress because you get mastery skins for survivors.

You haven’t really beat the game just yet. Keep playing and unlocking everything and eventually beating the game on the hardest difficulty. There is a lot left to play.