Absolute masterpiece right here, I don't even know why I didn't play this before!
Celeste is definitely one of the most incredibly polished 2D platformers out there. The music is amazing, the graphics are very detailed while also keeping the pixel art simple and appealing, and also has a very good sense of humor.
Of all the aspects of the game, I think the storytelling takes the cake for me. The game takes itself very seriously when it comes to topics like mental health, something that's heavily related to Madeline and the Celeste mountain during the whole journey. In the end, she was climbing the mountain to conquer her own insecurities (reflected on the Badeline character), while also treating her depression and anxiety so she could prove herself "she can do this".

I got to beat all chapters from 1 through 9, and also obtaining all blue crystal hearts and the red ones from the B-Sides, but there's no way I can beat the C-Sides, let alone get the golden strawberries LOL

I VERY highly recommend it, especially for those who are looking for a challenging experience. You are not going to regret it :)