@Kreslotso, there is an invisible platform right in front of the wall, it appears when you jump on it but with a certain timing it may not appear. It allows you to reach the trophy without having to defeat the boss.

no

Hello Ruslan.Bogdanov, what's "Plumes" in the shop ?

I think sometimes the game considers that you fall on the button when you drop from the corner right next to the button.

Il est possible de se déplacer avant de toucher le sol au début de chaque niveau, pour cela il suffit d'appuyer sur le bouton "pause" avant que le niveau commence.

Google translate ⬇️

It's possible to move before hitting the ground at the start of each level, you simply have to press the "pause" button before the level starts.