I really dig the art style and music. I think you nailed that aspect. The main character actually reminds me of Ty Lee from Avatar the Last Airbender. You also included your theme very well. Character movement felt good. Nothing stuck out as being odd. I like that you included a map and it updates accordingly. MVM entries with a small number of rooms can get by without having one, but there's a point where the player can't keep mental track of all the rooms and places they need to come back to. That being said there are a couple items that should be addressed.
First of all, spikes in blind spots. As a player, it feels really unfair. This might be the most noted feedback you receive throughout the jam. And its definitely something you should keep in mind in the future.
The other thing, and this may just be a personal preference, I feel like starting out the arrows you have to use the time slow on should be slower and gradually increase in speed as you progress through the game. You don't want to immediately frustrate the player. With this type of mechanic, (and it is a very cool mechanic) you want to ease the player into the flow of it. After a certain point of progression, step it up.
Other than that, you have a really cool idea that I think you should continue with it. SMVM is going on, so you can take the feedback you receive here and really step up the game's quality and submit whenever the deadline for that is. I would definitely give it another go to see how it improves!