Oh, it doesn't mean it was a bad decision, I just suggest you warn the player some way. It might seem something very obvious when you know the game, but as a player I had no idea. Although, what I would highlight here is that the beginning felt a bit like a tutorial being repeated again and again every time I died. You could maybe add a checkpoint after this first part, which felt good as an introduction but not good to repeat. Then the player could experiment until they learn without getting so frustrated with this.
This is just my opinion, but I hope it helps. Thanks for replying :)