Very cute game, and I love the spooky theme going on. The monster designs were the best part of the game for me, and I really like how they get faster and chase you if you get too close. The flying one was especially very spooky. I'm most impressed with the AI though, coding a platforming AI that worked in the span of a week probably wasn't easy.
One thing I would've done is made the music track longer, or add different music for different sections. It does get repetitive listening to the same chords over and over again. The AI is also a little funky at times, sometimes it doesn't follow you even on really short steps. I would have also added a restart button. I know the green pools serve as a way to kill yourself and reset, but I actually trapped myself with the big blocks at one point and had to restart the whole game.
Overall, great game and sweet graphics. You created a very pretty environment, and I'm glad I got to play through it to the end.
Here, the player cannot jump onto the platform or through the tiny gap between the block and the platform. The blocks also become too heavy to push, leaving the player trapped.