...And Then There Was One...

To get into the final area, go to the west coast of the lake.
Push the block to leave a trail of water, and join the trail you're making with the water that's already there (just move the block where it's at in the picture. Jump on the switch and ride Dippy across the water.
When you reach this area, use a Monarchy/Moa combo to hit the switch.
To hack your way through this area, Leviathan is extremely useful.
You'll never make it across this pit without a running jump with help from Moa and Flash
Spikes appear around the perimeter of each cubicle, so be careful.
When you reach a seemingly impossible pit, use a Moa/Monarchy combo, which will expose the hidden path.
Due left of where you are is an Apple of Life. The way to advance is by making a path down and to the left.
Ride Dippy across the spikes until you reach the monsters. Talk to Monster Mother. When she finally shuts up, you'll be able to face the final bosses.
Why not try the top door first? This is the sense of smell. When you walk, you leave a path. When you jump on the path, it fills with spikes. The trick is to make sure the monster is on the path while you jump on it. Wong can help. 6 hits will do the trick.
Remember, talk to Mother Monster any time for a free HP refill.
Upper left door houses the sense of sound. Just use Inferno/Moa. When the floor starts changing, you can use Dippy to prevent damage, but it's not really worth the effort.
In the lower left door is the sense of sight, which hides under blocks. Just throw your sword using your preferred combination of animals, and if you hit Vision, you'll damage it.
Lower right door is the sense of touch. You must defeat two hands, each with 30 HP. It shouldn't be too hard.
The upper right door is a game of Pac Man. There's really no way you can lose. Just collect the apples.
The Spirit Energy in the center door is the final boss. Use Dodo to open its eye and then throw your sword at its open eye. To win quickly, use the Dodo/Inferno combination at its open eye.
I must not reveal the ending to you...but to view the credits, go upstairs at the castle, talk to Mac, then go to Soleil Town's entrance, say Yes to Alice, and talk to her again.