I didn't get very far since I accidentally jumped out of the level inside the apartment to the right. The idea that you need to give the lost soul an item of importance to bring them back into the body is very cool. I think the game could have benefited from fewer locations with more polish. Like just starting in front of the apartments and then figuring out what the found key is for by calling your friend probably would be enough. The taxi could be introduced afterwards. I also didn't understand why I had to go to a phone booth to speak with the friend but he could talk when picking up an item somewhere else as it seemed the intention was that you yourself have to call the friend to get more information. Though then again, walking back and forth just to check might also be annoying.
Either way, interesting idea and good job making it! Especially for a first game (which I read in the other comments) this is a great start!