There are two strategy changes in this run compared to the previous record:

• The jump at the three pillars has been changed back to the normal variation.

• I discovered that you can get a lower jump by falling before doing your jump. This is used to save time in the two sections where you have to do a one block jump.

Also as you can see from the run there's a way to start straight from Boss if you're playing on Steam. It's great for doing IL runs of Boss, because after finishing your run you don't have to play through the whole dungeon to try agian. I made a forum post about it if you want to know more.