Performed 10 full-hit cross chains.

Win each playable Command Board.

Arcade - Complete a course with an S Rank.

Practice - Complete 200 Different Combo Challenges.

Collect every trophy in Ratchet & Clank: Into the Nexus.

Upgrade all weapons to level 6.

Defeat the Guardians of the Graveyard.

This is proof that you've equipped items that activate an Elemental Union bonus skill. Basic skills all correspond to one of five different elements. Equip skills of the same element that line up directly adjacent to each other, and you'll form an Elemental Union based on how many skills are in the line. Check it out on the skill sheet!

Kill something with your own arm.

Lose, then recover your weapon from an Imp.

Story Complete - Vader Immortal Episode 3

Story Complete - Vader Immortal Episode I

Acquired all trophies.