UPDATE FEBRUARY 21nd: I'm finally in Alpha!!! I redesigned the look of the second level and it looks great now:
You can see an old picture of this level in one of my first posts. It didn't look so great in my opinion. Level 3 has been fixed so the platforms don't cause any issues. I fixed some other minor issues like fish moving the opposite direction compared to where they face when you spawn at a checkpoint.
I tested a couple of times today and I don't see any more bugs. This game is in a complete state and I will get some more people to test the game in March when I will show my game at another event.