I recently wrote and ran a very simple one-shot for Lamentations of the Flame Princess and it went well. Rather than write up the adventure as a module with GM advice, suggestions for play etc, I’m just uploading my actual notes from which any GM worth her salt should be able to improvise around the player’s choices and their characters actions. 
In the adventure I ran the end turned out very differently to the most likely outcome as one of the party realised that her only chance of saving her downed allies from the dreadful undead was to make a deal with the devil…
Anyway, make of it what you will – The Blackspire Horror
Otherworlds 