You get the assignment to kill Clyde Peckheimer in trade for a mortal soul. So who are you to refuse?
Walk to the right until you reach the alley. Use the doors on the building on the left, where Clyde works. Inside pick up a shard of GLASS that’s on the floor. Walk to the right to enter the office and find no one there. Take the ADDRESS BOOK from the desk. Look at the book in your inventory to see it’s locked. Use the glass shard on the book to cut the lock and learn the address of Clyde.
Leave the office on the left and leave the building through the broken door. In the street walk to the right and use the stairs in the building on the other side of the alley. After some resistance you reach Clyde’s apartment. Use the door to find him….
Game source: A copy of the game was found here on the internet.