Minecraft wiki entry for Speedrun, associated text: When you get to the end, always be sure to have at least 7 beds in your hotbar. Wait for the dragon to perch in the middle, and then place a block in front of it's head, and behind it, place a bed. Blow up the beds (and possibly wait for the dragon to re-perch) and then stand in the end portal. If the dragon is flying around, shoot at it, or the end crystal it is using to heal itself. If it takes too long, you may want to (painfully) reset.