Starting off, the game is very pretty looking. The ghost is very cute and the aesthetic is well put together and maintained throughout. The music chosen also really complements the visuals.
The gameplay is pretty good in terms of moment to moment play, however I do think it would have benefitted from more sounds especially regarding player movement, and enemy attacks. A sound indicating that you just ran into a block would also be a nice touch. Obviously this was a 48 hour game jam, so I don't think its a big deal, especially when the rest of the game looks this good, just wanted to provide some feedback that is hopefully useful. While playing the game, I liked how I really had to think about positioning as the Tetris pieces fell towards me. It made for some interesting moments where I was trying to time my escape from certain enemies abilities. As far as the gameplay being difficult, I agree with others that the difficulty curve might be a bit steep. If you choose to expand on the game(and you should), I would suggest adding multiple hearts for the player, so that they can take 1 or 2 additional hits. Thank you for the game, it was very polished and well done. I hope this review is useful and I hope you update this game, because with some tweaks you could really make it shine!