Riverside - Secret Fortress

Secret Fortress - Stage 1

This stage should be simple enough. Totem your characters so you can reach the ledges and keep doing so until everyone has picked up a water rod of their own. Next, use that item to create water pillars and reach the towers with the switches. Step on each one to extend the bridge.

Secret Fortress - Stage 2

Totem two guys on dry land and use water pillars as platforms to cross over to the two switches - one on the left and another on the right. This will open a path in the middle so make a pile of three and use more water pillars to get across. For the next bit, you'll have to use water pillars to block off the fire traps, so each person can step on the three switches along the way. Finally, time the release of your water pillars so you can safely get past the spinning fire traps across the water.

Secret Fortress - Stage 3

For this section, you will have to use water pillars to cross the gaps and get rid of the enemies on the way. At the end of the path are some bombs that you can pick to throw at the switches on both sides. This will open a path to some destructible blocks. But first you'll want to cross over to the switch platforms and defeat the crows when they come towards you. After they're gone, your goal becomes to take a bomb across the water to blow up the blocks. To do this, have one guy create a water bridge to the other side then switch to someone else, and pick up a bomb to be rushed over.

Secret Fortress - Stage 4

Sens three characters to step on the big switch. This will summon a horde of monsters to be defeated. You can reach the Moblins using water bridges while the flower enemies reachable with a stack of two characters and sword slashes. Defeat the horde and the gateway will appear.