User blog comment:Lord Loss/Monster Appreciation Day: Ceadeus/@comment-69.221.167.81-20120801204713/@comment-5020152-20120824005614

Get a full set of Lagiacrus armor, fully upgrade it, and attach a bunch of Upstream Jewels to help resist the currents he makes.

Forge either the Volt Axe or the Thunderclap+ (if you like using SAs or LSs like I do). You should be able to beat him easily.