In Free Play mode, switch to a character who's super strong and pull on an orange bar near where you found the second statue. Push it along the track to cover the second vent and create a bridge. Cross all the way to the other side, then place the statue on the green pad here. Now climb the ladder you created and pick up the statue, then jump down to this bridge. Push the right-hand box into the wall, then push the box on the left along the track and into the water. Ignore the ladder for now and head to the left to find some boxes along a blue and white track. Pick up a bomb from the box and throw it at the shiny rocks nearby, then assemble the pieces into a ladder. Find it, then use the shovel to dig it up. Now switch back to Jack and use his compass to select the box in the bottom left. Push the statue along the track to cover the vent spitting out water. Pick up a shovel and dig up the statue, then build the pieces onto a blue and white track nearby.
You'll find it buried, so switch to Barbossa and throw a frog at the orange and yellow target nearby. When you're back in control, use Jack's compass and select the bottom option to find a statue. Head to the back of the tunnel and jump into the water flowing into the ceiling to trigger a cutscene. Use your super jump to get up to a chain, then pull it to lift the final lantern. Now switch to Angelica and head to some glowing flowers on the right. Keep rolling until the lantern has been lifted. Press the character button to hop onto it, then roll into the Barrel Switch near the spider web. Build them into another lantern, then head to the right to find a barrel. Near the tunnel's entrance, hit a large spider web until several pieces fall off. Finally, head to the back of the tunnel and hit one last group of bats near where you pulled the orange bar. Now head to the area where you built the spider and shoot another group of bats to the right of the right-hand skull. Switch to a character with projectiles and aim at some bats hanging from the ceiling.
Pull on an orange bar near where you raised the lantern for a Minikit. Head back to the main tunnel and switch to a character with super strength. Once you have all three vents covered at once, you'll get a Minikit. Push one of the rocks to cover one of the vents, then rush to cover each of the two other vents. In the same room as the statues, find three steaming vents along with some rocks on tracks. Jump through the hole, then hit six statues until a Minikit appears.
Now switch to Syrena and use her ability to destroy some objects on the wall inbetween two skulls near where you built the spider. Use the character button to ride the spider, then kill some smaller spiders for a Minikit. Jump up and down on top of it to knock down some pieces, then build them into a spider. Switch to a character who can repair things, then fix the gears into a handle. In Free Play mode, head to the right from the glowing flowers until you find some glowing gears. Once the lantern has been lifted, head back toward the tunnel's entrance. Place the wheel on the wall nearby, then use the action button to turn it. Use the shovel to dig it up, then assemble it to create a lantern and a wheel. Use Jack's compass and select the option on the right, then follow the dots until you find something buried. Once all five are gone, you'll get a Minikit. Now look around the area outside the tunnel for three more clusters of mushrooms. You'll also find your second brown cluster of mushrooms. Jump at the glowing flowers, then switch back to someone who can blow things up and destroy your second shiny barrel. Now head back down toward the tunnel and switch to a character with a super jump. They shrink underground if you get close, so use a character with a gun to hit them. Near the barrel, you'll also find a brown cluster of mushrooms. Blowing up four more of these will earn you a reward later. Now switch to a character who can blow things up and destroy the shiny barrel near the guy. Hand it to a guy who's asking for it for a Minikit. Once a bird drops a green dinosaur, pick it up and head back to this level's starting point. In Free Play mode, switch to a character with projectiles and hit a target to the left of the tunnel.