I beat the game!
It still took like 10+ additional attempts for the section that I was stuck in put then I got forward. The last overly difficult challenge (in my opinion) was where one had to jump over a plant and then grab the platform under the plant That also took many attempts to consistently get past. The rest of the game was actually quite good regarding the difficulty level. I died a few times but in most attempts I got further than the last one so I felt progressing.
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It was also very satisfying to beat it! I noticed that usually winning a game is more rewarding if it has been really challenging. But finding the balance is really hard because if it's even slightly frustrating the player might quit playing and never got to the end.
Also, I enjoyed the ending scene. The music and animation added a lot to the winning satisfaction. There was something really nice espeacially in the music.