The art and style of the game was pretty neat, I can see you drew huge inspiration from the game Baba Is You, even in the level designs. Characters were pretty interesting, I like how you gave each of them with a unique personality.
The key guy made the game a tad too easy however, as most rooms could easily be cheesed just by using him, moving to the nearest exit and opening it. I can see how levels get harder and harder to balance as you unlock new characters. There's lots of room for improvement, but I believe this game has great potential!