Good game! I have some suggestions for the full version:
Choices please! It can absolutely still align with the mc! Like make me choose HOW to kill that dude because the mc is not going to spare him. Minimal dialogue choices like the reaction to the package arriving or what to say to the villain would also add a lot of flavour! Art, sound design etc. are awesome! The only thing I have to say about that is that in some moments the music is too calm, considering whats happening. Oh and a TW for the wristcut would be good. You could also enhance the horror aspect by (for example) giving the mc strong paranoia and some choices connected with that that make the player nervous or something similar to that!
I hope this has been helpful! I'm looking forward to the full version!