Wildermyth: The Mothqueen

[Part of the Cursed story line]

Kayruen is rescued from the clutches of the bugs having only partially transformed into a bug herself, and reveals their god, the Mothqueen, is after her brother Kaydo. Desperate to stop the bug transformation Kayruen pierces herself with a splinter of a magic tree which works, but only because she is now slowly becoming a tree.

Kaydo devices a plan to use a magical prison tower to trap the Mothqueen forever (because you can't kill gods) and so sends the team to clear it out of the bugs currently in there - an easy job thanks to all the transformations going on - and then to lure the Mothqueen in by putting himself inside as bait.

This final battle is freaking epic and pretty tough as you must protect the bait from the endless bug swarm which at this point includes dragon bugs, but at the same time go forward to attack the Mothqueen which "irritates" her and forces her to move forward into the trap based on the damage dealt. Iris, mind controlled by the Mothqueen at one point, rams a spear through Baeloth - killing him.