Lagiacrus heralds the arrival of underwater combat in Wilds, as a portion of that fight could take place underwater where you won’t have free access to your weapon. To take it on, you’ll need to have completed the main mission A World Turned Upside Down, and the side mission Forest Doshaguma - available at Hunter Rank 31 or above.

Lagiacrus and Seregios are both making their return in Monster Hunter Wilds with Free Title Update 2, which officially launches on June 30, 2025.