This is a really solid game right here! I love the aesthetics and the particles for that tail. The level seemed a little unforgiving in level 2 where I had to memorize the pattern to get it through rather than learn how to deal with what is coming up. Requiring memory is a decent strategy for game design, but I guess a few checkpoints wouldn't have hurt in that case. Also, a really minor note that the arrow keys work with A/D to go left and right but the up key doesn't jump like W does, you can fix that real quick with the Player Input tab. Still, very solid work all around! I appreciated the visuals, how you can take a break and stick to the wall (you can change the Physics material of the box collider if you didn't want that), and even the occasional sound effect. Great job!