Here is the full list of all 33 Trail Breaking achievements.
Find all the baseballs.
Find all the hidden turtle shells.
Find all the bird's nests.
Collect all of the Idols.
Knock the rock piles over.
Let the mushrooms lift your spirit.
Check out the beautiful flower patches.
Find the hidden stone heads.
Find all the crystal skulls.
Find all the useless switches.
Find all the pictures of the king's daughter.
Ride on top of the giant turtles.
Find all the 4-Leaf clovers.
Look at what the giant heads are looking at.
Find all the pyrite.
Bathe in the waterfalls.
Find the dead explorers.
Find the frozen explorers.
Put together a snowman.
Find all the Christmas bulbs.
Find all the alien technology.
Find all the alien species.
Go through all red portals.
Find all the hand prints on the rocks.
Find all the raptor tracks.
Track down the treasure using the map.
Release all the spirits from the urns.
Find the bloody daggers.
Capture all the ghosts in the cage.
Open the cages and set the pixies free.
Locate the strange anomalies.
Find the rare flowers.
Complete all the achievements in the game.