Thanks for the constructive feedback! I made the jump height equal to 2 tiles, which visually makes it look like the character almost won’t make it. Thanks to your comment, I realized it’s better to give jumps more height margin. I also agree that the slow-motion mechanic doesn’t really fit here.
This is my first game, and I’ve learned a lot — especially how differently other people experience a game compared to the creator. Having a tester really is important.