Lava Fountains
When you are chased for a second time, the lava fountains will not go off

Mountain
Master Koda's wall back flip on the mountain.
When you get to a see-saw, if you go to the middle or near it sometimes you can reach places without using the see-saw. On the mountain, you will face all the problems you faced before, such as rolling rocks, mammoths, etc.

Valley Of Fire
When in the Valley Of Fire, the big rocks (the ones only Kenai can push) can be put over the water (but not lava fountains).
You can stand on the rock to reach new places