Another Crab's Treasure

You'll meet the Moon Snail early in the story and can visit the Moon Snail's Domain at any time. The Moon Snail offers upgrades for your crystals, which add additional skills, moves, and stats to Kril. The upgrades are split into three paths, so purchasing all of the upgrades (you can do this all in one playthrough), will unlock Path of the Predator (30G), Path of the True Crab (30G), and this achievement.