Art is great, especially the mage and it's cute animations. It's nicely pixeled and has a great colour - yay purple! The enemy looks great and creepy too although shame there's no animation.
However the level design isn't great as the start is unforgiving and it seems that the sizing is all off or something? It feels that we're zoomed in and the platforms and spikes are weirdly or incorrectly too big.
Spawning with two enemies right on top of you is cruel and I kept instantly dying, plus there's a platform blocking you. There's also the option to go left which feels like a long time before you finally hit a barrier. The platforms and spikes seem to be incorrectly sized and placed at weird heights as neither you or the enemies can go under some of them so both get stuck. Nearer the end there are platforms that lead down and there's no way of knowing where they are so it's just jumping and hoping you land on them. Not sure if that's intentional or not.
Music is good, but starts weirdly after a few seconds of silence and there's nothing in the menu so that could have been a good idea to do. Some kind of background would be nice as well, whether a forest or village. Finally, instead of just insta-dying, there should be a damage or heart system as the hit boxes aren't great so death is likely.
In short: great work on art, not so much design.