I played this game for quite a while, and I enjoyed it! You managed to create a simple but fun gameplay loop that can be expanded upon in many different ways. I find the scaling of objects incredibly useful as it helps get out of situations where the player could be softlocked. One of the suggestions I have is to scale the difficulty, because I feel that the 300th meter feels not that much more difficult than the 50th meter. For example, you could have water rising that forces the player to climb quickly and stay above. But I feel there are many different ways to do this, and it really depends on what your vision for the game is. Good job!