I spent a lot of time on one and then gave it up in the end because it never worked.
I started up a new post-update single player world yesterday. Found a skeleton in a little dark spot not far from my door after the first night, which I managed to take out (the sun did some of the work once I lured him out far enough) although I did lose most of my health. Then I went and farmed some pigs for ham, and I was on my way back to base to stick them in the furnace for better health gain, and of course I died (had 1/2 heart left) jumping down about 3 blocks.
Stupid multiplayer and it's no-penalty-for-jumping. :p

