Well, I decided to do Power Blade for a run, since when I started it, it seemed no one else had done it. I did a run through without taking a hit on Expert mode as opposed to just going for pure speed for entertainment purposes. I had a decent time of 20:00 on my first attempt, then I found out Walker Boh had submitted one with a 20:12 time, so I redid mine using a little trick I learned to save a little time. Normally, if you fall a good distance, you'll crouch for a moment when you hit the ground, but I found out the throwing animation takes precedence, so if I threw a boomerang as I was falling, and hit the ground on the last frames of the the throwing animation, it skipped the crouch animation, and saved a little time. So it might look like I'm throwing boomerangs for new reason, but that is the reason I do it. Coupled with the instant boss kill grenade glitch, I think I made really good time on this run.