Okay guys, I only speedrun Doors. Like, ONLY. So with the new Mines update, there have been so many Mines and Hotel tricks to use! Here are some and some people using them:

• Figure closet trick - get Figure coming in Library or Door 100 (don't think it works in Mines), and jump in the closet, then jump back out, and for 7-10 seconds, he will be frozen outside your closet, letting you run around.
• This is good if you are doing a duo Mines speedrun! First beat hotel with at least 1 vitamin, then once your in Mines, if your on PC, just do what they do in this vid (i think you need the Herb for it.): for that trick the other player should run ahead while you dupe your vitamins or whatever then voids you and you can pop the vitamins.