Hey congrats on your first game! Really enjoyed the choice of audio!:) Really simple concept but I still found it enjoyable given audio since audio really helps make the game feel whole hehe
Also, I don't know if there was supposed to be audio in this one level where it was "platformer now, no portals" but if there is, it wasn't playing on my end
Perhaps the only complaint I ever had was not knowing what restarts the game. For instance, the missing texture blocks (purple/black) I thought were intentional, but I didn't know kills the player
Overall, keep up the good work, and hope you enjoyed making this!