The plot is funny, the art is really nice and the music is good, but something there is one BIG thing making this game """""unplayable""""", and it is velocity in the air, it is not jump height, it is the velocity of the slime while traveling in the air, maybe, lower the gravity just a bit or change its speed, cuz currently, its almost impossible, from what I see from the first 3 levels, it seems you changed one of those variable in the last second.