How to beat Subterror, the Moonlit Grotto miniboss (Dungeon 3). Shovel is the fight language: track the dirt trail, dig the tip on a pause, then sword the exposed body. Claim the Small Key and continue toward Seed Shooter. Instant answer below; the checklist tracks prep through victory.
Dig loop Prerequisites Form cards Stuck diagnosis Phase shortcuts Step checklist FAQ
Memorize the trail → dig → sword cycle before the miniboss door opens. When sword damage stops, Subterror is still burrowed — dig the dirt trail tip first.
Mark gear and story progress you already have. Saved in this browser only.
What each Subterror state accepts for damage, and how the Shovel fits in.
Match what you see in-game to a cause and a fix.