other: floaty jump
Just before fighting Chykka, stand in the dark water as you break the fourth strand holding the cocoon. After the cutscene, you'll have a strange ability to jump much farther and higher in human form, but it's lost when you touch either kind of water or take an elevator out of Torvus.
Floaty jump is currently the only way to get the energy tanks in Meditation Vista and Torvus Plaza early. In order to leave Dark Torvus Temple and get them, you'll have to beat Chykka without touching the dark water (not as hard as it sounds; just lock your view down before jumping anywhere so you can see where you're going).
Notes:
- If you leave and reload the room while fighting Chykka, he'll disappear without leaving the dark visor behind, forcing a reset.