Really cool concept with really nice visuals to help tie it all together!
I loved what you did allowing the possessed enemies to serve multiple functions alongside carrying out the typical movement task! I think it added a lot of interesting depth to the mechanics :)
I feel this game could be extended into a nice mid-length adventure puzzler with a bit more polish and more content! Particularly I feel the hitboxes were a tad troublesome and could use more dialing in, those dang spikes drove me a bit nuts hahah
Good job all in all though!