Oddworld: Stranger's Wrath HD

Missable!

Glitch
A number of PS3 users have reported this trophy not popping for them. Make sure that you shoot all the crystals from a distance and then pick them up one at a time to ensure each crystal registers. Save your game before you enter the first cave so you can reload it in case the trophy doesn’t pop.

Orange crystals are located in only two caves along the Mongo River. On your way to bounty Elboze Freely, you will head left along the Mongo River after leaving the Port Authority. Across the river to the left of the waterfall will be a small, tree-covered island. Swim across and hidden at the back of the island is a cave. Destroy the wooden fence and head inside. You will see the orange crystals on the cave walls. Shoot them with the Zappfly and they will break into smaller pieces. Pick up each piece and then head back to the river to find the next cave.

Now on the right side of the river, head further up until the path rises to a higher level. Jump of the path into the water and swim towards the bit of land that has fishing tools and skeletons. Behind the shrubbery will be another cave. As before, destroy the wooden fence, head inside and shoot at the three crystals on the walls. Once you have collected the broken shards in the second cave the trophy will pop.

See the video below for a walkthrough. Credit to psychosmoke.